) I can safely say that My Little Pony: A New Generation was great! 
And here are my random thoughts:
MLP Season 5 episode rankings (updated 18th August 2020) · 5:23pm Jan 17th, 2018
0/10 - AWFUL (unsalvageable, nothing to be gained from watching it, never should have been made, wouldn't recommend to anyone, completely butchers an important subject/teaches a horrible and downright toxic moral)
1/10 - HORRIBLE/BORING (tedious to sit through, hurts to watch it, a bore, no reason to watch it, whatever positive things about it are tiny and not enough to save it)
2/10 - VERY BAD (slightly less terrible, maybe it had that one character you liked or one/two jokes you laughed at that kept it from being a 1 but still very painful)
3/10 - BAD (the kind of bad where you're checking your watch over and over to see how much time is left before it finally finishes)
4/10 - MEDIOCRE (not awful but not really that good either)
5/10 - EH (average, didn't love it or hate it but you feel like you could've done something better with your time)
6/10 - DECENT (the first positive rating on this list, fine overall, you wouldn't watch it again but you are glad you saw it once)
7/10 - GOOD (enjoyable enough that you'd maybe watch it again in future, had some noteworthy flaws but is overall a worthwhile sit-through you'd recommend to someone)
8/10 - GREAT (a solid, enjoyable episode, very entertaining)
9/10 - EXCELLENT (very engaging, awesome, you really recommend it to anyone)
10/10 - MASTERPIECE (extremely engaging, teaches a valuable moral perfectly, definite must-see for anyone)
The Cutie Map VERY BAD
Castle Sweet Castle DECENT
Bloom and Gloom GOOD
Tanks for the Memories EXCELLENT
Appleoosa’s Most Wanted HORRIBLE/BORING
Make New Friends But Keep Discord GREAT
The Lost Treasure of Griffonstone GOOD
Slice of Life HORRIBLE/BORING
Princess Spike BAD
Party Pooped GOOD
Amending Fences MASTERPIECE
Do Princesses Dream of Magic Sheep AWFUL
Canterlot Boutique GREAT
Rarity Investigates! GREAT
Made in Manehattan EH
Brotherhooves Social MASTERPIECE
Crusaders of the Lost Mark HORRIBLE/BORING
The One Where Pinkie Pie Knows DECENT
Hearthbreakers GREAT
Scare Master EXCELLENT
What About Discord? BAD
The Hooffields and McColts GOOD
The Mane Attraction GREAT
The Cutie Re-Mark AWFUL
OVERALL: 134/240 DECENT
Favourite Season 5 episode: Amending Fences
Least favourite Season 5 episode: Do Princesses Dream of Magic Sheep?
LINKS TO OTHER RANKING BLOGS
Season One
Season Two
Season Three
Equestria Girls
Season Four
Equestria Girls: Rainbow Rocks
Season Five (you're already here, you dingus)
Equestria Girls: Friendship Games
Season Six
Equestria Girls: Legend of Everfree
Season Seven and Equestria Girls: Magical Movie Night
My Little Pony: The Movie
Equestria Girls: Forgotten Friendship
Season Eight and Equestria Girls: Rollercoaster of Friendship
My Little Pony: Best Gift Ever
Equestria Girls: Spring Breakdown
My Little Pony: Rainbow Roadtrip
Equestria Girls: Sunset's Backstage Pass
Season 9
Equestria Girls: Holidays Unwrapped
Friendship is Forever
Definitely in agreement with you on Amending Fences, although it's pretty closely followed by The Mane Attraction for my favorite S5 episode.
I personally have no issue with Crusaders of the Lost Mark. But that's just me.
Can I ask why you didn't like Do Princesses Dream of Magic Sheep? I thought it was an okay-ish episode.
5013938
For the bloody appalling way it handled depression.
Luna was a complete idiot for creating the Tantabus explicitly to punish herself despite knowing it could potentially escape into the real world. This isn't like self-harm with a razor that only affects the person holding it; this is like self-harm with a fucking nuke that puts everyone in danger. And all Twilight and company do is give Luna a speech that's basically "We love you, stop being depressed" which makes Luna's depression instantly go away.
As someone with a friend who suffered from suicidal thoughts years ago, that is NOT how depression works. And how the writers handled it is disgustingly disrespectful. Depression is not a cute personality quirk that's easily dealt with. Depression festers in your brain like a virus and fills you with a feeling of hopelessness and worthlessness. It does not go away simply because someone gives you a cuddle and says "there, there, we still love you". You need proper psychiatric help from a professional doctor, not the Tumblr attitude of "all you need are kind words and a hug through your computer screen to make these problems go away". This isn't a good moral for the kids watching delivered badly, it's a genuinely horrible and toxic moral treated as a good thing.
This is a major problem with MLP these days: what used to be a show about teaching simple lessons about friendship is now trying to address incredibly serious and complicated issues like depression (this episode) and suicide (A Rockhoof and a Hard Place) the same way they address a regular friendship problem.
5013953
Ah.
5013958
My friend's okay now but it took a long time and a lot of therapy sessions to help him.
5013962
That's good to hear.