I know I promised not to bombard you with blog posts. And I'm sorry... 
But...
So many comments are all 'season 3 was shit' or 'I'm never watching s3 again' etc. Believe me when I say, I have all the same gripes as you do.
But just to level the playing field (or some other cliché analogy that might fit better), let's take a not-so objective look back at the whole season.

Crystal Empire 1+2
Good:
-Pinkie is Sam Fisher and a jester
-Failure Song with Spike singing backup
-Crystal fucking ponies!
-Yet another bad thing that happened 1000 years ago, fanfics++
-Fluttershy and Dash joisting
-Spike saves the day and gets a stained glass window in the castle
-Shiny throws his wife over the balcony.
-New place, new ponies, fanfics++
-Berry Punch was in the stands watching the joisting
Bad:
-Sombra sucked. He had plenty of potential, his character was just written poorly. I get that he could have been like Sauron from LOTR, the dark mysterious force of evil that you never really see, but you fear. But he wasn't even that. Nopony seemed particularly scared of him. Concerned, yes. Like one is concerned about a nasty storm that's supposed to come around tomorrow. Not concerned like fate of thousands of innocent lives, and the possibility for all out bloody war.
Ugly:
-Did you see Cadence? She looked like shit. By the end I was yelling at the TV, 'someone get that bish a cup of coffee!'

Too Many Pinkie Pies
Good:
-A nice, old fashioned, simple MLP episode. Dare I say: classic? A callback to the simpler days of season 1, when we loved the show for just being silly, funny, and heart touching. And not for complex plots and stuff like that.
-Twilight turns a frog and a bird into mutated half-oranges, and doesn't even care.
-Pinkie clones herself. I mean come on!
-Pinkie breaks the laws of physics… ah, but this time she was directly called out on it. When she jumped into the lake and slowed down in mid-air. Dash actually asked her, 'how'd you do that?'
-Various Pinkie shenanigans
-Hands joke
-G3 joke
-An actual friendship problem/plot
Bad:
-Nopony notices there's only one Pinkie who's all depressed.
Ugly:
-Pinkie's G3 face lol
-Can they really be sure they got the right Pinkie?
One Bad Apple
Good:
-New character
-Fucking awesome CMC song
-Another good, old fashioned MLP episode about friendship and stuffs
-Golden Sweetie Belle
-CMC get an A-Team montage with matching music (pure awesome)
-Scoots flutters around a bit more than she usually is able to
-Sweetie Belle makes a magic spark from her horn
-Car chase… in a world without cars. Go figure.
-Pinkie makes bad jokes
Bad:
-CMC makes a Manehattan branch. We'll all miss Manehatten.
Ugly:
-Some of Applebloom's outfits…

Magic Duel
Good:
-More Trixie
-Saddle Arabians…
-Zecora doing magic-y stuffs
-'Alicorn' becomes canon
-Various shenanigans
-Awesome epic intro scene (dark rainy streets of Canterlot)
-Fluttershy biting her hooves
-Fluttershy in that weird bunny/spy outfit
-Tons of callbacks to old episodes
-Boast Busters had me wondering if Trixie really had a horn under that hat. But she did. Since she got the alicorn amulet, this one had me wondering if she had wings under that cape. But she didn't. inb4 next Trixie ep she does have something somewhere.
-Rule 63 Applejack! (Sort of.) I flipped shit when I saw that!
Bad:
-Some ruined fics. Just a few. Trixie still left again on mostly bad terms, so most redemption fics will be ok.
Ugly:
-Snips and Snails… lol they're lovable stooges though.

Sleepless in Ponyville
Good:
-Finally, a Scootaloo episode
-Luna
-New (partial) ghost stories. We already knew a bit about the headless horse, but now we have more plus the olden pony.
-Classic cartoon gag (character falling asleep while controlling a vehicle and stuff happens)
-Abnormally good animation, background art, etc.
-Dash says she'll be Scoot's big sis. All. My. Feels. I literally cried when I saw that. Best episode… ever. Except maybe the Royal Wedding.
-Luna invades your dreams, possibility for Inception type stories. Fanfics++
Bad:
-Why was Luna talking like that? Maybe it's just something to do with being in a dream or something. Idk.
Ugly:
-The olden pony. She was a cool bad guy though. Gets her horseshoe and just says 'have a nice day.'

Wonderbolts Academy
Good:
-ERMAGERD WERNDERBERLTS!
-New insight into the Wonderbolts
-Spitfire plays drill sergeant
-Spitfire wears some spiffy aviators with a spiffy-er uniform
-New character
-Dash kicks flank in flying stunts (as usual)
-She's basically a Wonderbolt already!
-Except she's still not. So most fanfics are not ruined.
-Good friendship lesson/ teamwork thing. You know.
-Snowflake/Roid Rage YEA!!!!
Bad:
-Spitfire got a new voice AND SHE'S STILL NOT BRITISH. I'm an American, but seriously? You're gonna name a character Spitfire, and not make her British? Wtf mates.
Ugly:
-The mane 6 (minus Dash and Flutters) fell on a cloud and bounced off. Clouds are only solid to pegasi. Oops!

Apple Family Reunion
Good:
-A ton of new Apples
-More Apple family history
-Nod to AJ's dead parents (2 shooting stars)
-Baby AJ in flashback. D'awww…
-Fruit bats. Who knew?
-AJ uses Spike like a zippo lighter. LOL
-Golden AJ
-AJ gets a song!
-JappleAck mouth full of apples gag
Bad:
-The episode seemed slow.
-We get Braeburn but he has no lines other than a 'yea' in a deep voice.
Ugly:
-That Turnip guy is related to the Apples…
-Did anyone ever notice that the Apples' house IS a barn? The same barn that got destroyed. So either their house got destroyed, or their barn is an exact clone of their house (or vice versa).

Spike at Your Service
Good:
-Spike episode!
-He has a business card
-More info on timberwolves!
-Pinkiestache
-Spike gives AJ a back scratch
-Dash flies into a pile of rocks
-Apparently AJ and Dash are amateur writers… seriously, how has this not been noticed more?
-And Rarity's a critic lol
-Spike kills a timberwolf with a pebble
Bad:
-Spike's really dumb. What gives? Normally he's the wise voice of reason and the guy who can get things done (actually reminds me of myself a bit). Here, he was just a complete moron.
Ugly:
Timberwolves got HUGE. They used to be like cow-sized, now they're like house-sized. Maybe they come in different sizes.

Keep Calm and Flutter On
Good:
-Disco(rd)'s back baby!
-Good old fashioned chaos, what more do you want?
-Trollestia says 'fix Discord cuz I need his magics for stuffs' then leaves.
-Dash calls him 'Dick-cord' (lol Dipcord, same thing!)
-The plot makes sense, it's just a shame it only had 20 minutes to play out.
Bad:
-Too short. Not enough time to turn Discord good.
-Anyone else notice that Discord's animations were kinda unnatural/weird looking? Granted, he's not even remotely close to any real creature for reference, but still, I didn't notice this the first time we saw him.
-A lot of ruined stories. Even if he said he'd be good 'most of the time.' (That one was a close save for one of my fics) Fanfics--
Ugly:
-Ponies have gravy? Gravy is usually made from meat. Oh well, maybe it's like hay gravy or something. lol

Just For Sidekicks
Good:
-Spike episode!
-Peewee's disappearance has been glossed over. It's actually a rather cheap lampshade, but at least they did it.
-TANK! Finally we see him again
-Winona!
-Angel's a little shit as usual
-Dash gets snuggly with tank, even if she's a little embarrassed about it.
-Big Mac and Cherilee are still together
-Screw Loose makes an appearance
-CMC and Spike do some stuff together
-Spike does the overdramatic zoom-out NO! thing
-Zecora trolls Spike (even if she had a good reason)
-Pinkie pops out of a couch
-Rainbow Dash merchandise in the CMC's clubhouse. lol, silly Scootaloo…
Bad:
-Spike's dumb again. Although, at least he was trying to subcontract his pet sitting duties, even if he failed at it.
Ugly:
-Moral of the story? You can do stupid shit, lie about it, and get away with it. But hell, if Rarity can do it, so can Spike!
-Now gemstones are worth money? What? They were as good as worthless before, now a tiny ruby shard can buy you an industrial strength pet hair dryer apparently.
-Spike's trying to bake a cake despite the fact that the library has no oven. Just a fireplace.

Games Ponies Play
Good:
-Nice new spin to see the other side of the previous episode.
-New characters
-Get to see Cadence and Shiny again
-Shiny is officially a Prince
-Filly Dash plus RAINBOW DAD.
-Chickadee hits on Shiny. Fanfics++
-Dash crushes a small child's spirit.
Bad:
-Poor Shiny never gets much of a part.
Ugly:
-Cadence's hair lol

Magical Mystery Cure
Good:
-Call (way) back to Spike's 7 hour bubble-bath-taking.
-The Elements of Harmony (perhaps the most powerful and now clearly-somewhat-unstable magical artifacts) are on display in the main room of the library.
-Celestia's monologue actually started to sell me on the idea of Twilicorn.
-Twi's speech was kind of touching.
-Shiny cried and called it 'liquid pride' like a baws.
-Dash flipped shit when she saw Twi had wings
-Hub made a pony knockoff of the Dos Equis most interesting man commercials. Laughed my ass off.
-Vinyl Scratch appearance
-New outfits for mane 6, Cadence, Luna, and Celestia
-There were some crystal ponies hanging around Ponyville and Canterlot
-CELESTIA SINGS!
Bad:
-Too much singing. Most of the songs were good, but… whether you call it a musical or not, it felt as though they were trying to use the songs to fill time and make up for a lacking plot. Filler. In a season finale. That's HALF as long as it should be. For shame.
-And DESPITE all the musical numbers, THERE WAS NO RARITY / OCTAVIA DUET!
-AND NO DRAGON FLUTTERSHY!
-Am I mistaken in thinking that Twilight did not actually do anything magical to reverse the spell? All she did was point her friends in the right direction. That's hardly 'creating magic.' It's more like fixing your own fuck up.
-Twilight's a fucking alicorn. Yes, it makes sense. The culmination of all her training and experience. It was the obvious thing to happen. But it should have been saved for an epic SERIES finale, and not just thrown into a 20 minute season finale just because, and I quote (paraphrase): 'little girls like princesses.'
-Twi's gonna live forever and watch all her friends die :)
-Luna had not a single line.
Ugly:
-Some bits at the end were recycled from the wedding. Twi's parents crying, the crowd outside the castle, etc.
-Twi's cutie mark that appears in her eyes has 6 little white stars. Not the usual 5. Unless that's like her alicorn cutie mark or something.
-Celestia has been watching Twi this whole time. Apparently quite literally. A wee bit disturbing.
HUGE BLOG POST IS HUGE.
I'd say, over all, I'm content with season 3. It gave us plenty of good, and although a couple things rustled my jimmies, I think the good still outweighs the bad. Even if I only say that because Sleepless in Ponyville made me cry.
Well, that’s it for now. Let me know if you think I missed anything.