) I can safely say that My Little Pony: A New Generation was great! 
And here are my random thoughts:
MLP Season 8 and Equestria Girls: Rollercoaster of Friendship rankings (updated 18th August 2020) · 11:59pm Jan 21st, 2019
Again, since Rollercoaster of Friendship was released in the middle of Season 8, might as well rank it on the same blog.
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)
School Daze HORRIBLE/BORING
The Maud Couple EXCELLENT
Fake It ‘Til You Make It GREAT
Grannies Gone Wild GREAT
Surf and/or Turf GOOD
Horse Play MEDIOCRE
The Parent Map AWFUL
Non-Compete Clause AWFUL
The Break Up Breakdown GOOD
Molt Down GREAT
Marks for Effort HORRIBLE/BORING
The Mean Six BAD
A Matter of Principals AWFUL
The Hearths Warming Club DECENT
Friendship University HORRIBLE/BORING
The End in Friend VERY BAD
Yakity-Sax AWFUL
Road To Friendship AWFUL
The Washouts BAD
A Rockhoof and a Hard Place AWFUL
What Lies Beneath EH
Sounds of Silence MASTERPIECE
Father Knows Beast EH
School Raze AWFUL
OVERALL: 88/240 MEDIOCRE
Favourite Season 8 episode: Sounds of Silence
Least favourite Season 8 episode: A Rockhoof and a Hard Place
Equestria Girls: Rollercoaster of Friendship MEDIOCRE
LINKS TO OTHER RANKING BLOGS
Season One
Season Two
Season Three
Equestria Girls
Season Four
Equestria Girls: Rainbow Rocks
Season Five
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 (you're already here, you donkey)
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
Huh. I gotta say I'm surprised you rated Rollercoaster of Friendship as high as you did (for a given value of high). I thought for sure it'd be a lower score. Not complaining or anything, I'm just surprised is all! XD
5000585
Even with a crappy villain, you just can't go wrong with an unapologetically ship-tastic special.
5000587
Ironically, that ship-tastic-ness is part of why I'm apathetic towards it. I don't dislike Rarijack, but I'm not a fan of it, and the blatant teasing of it just kinda got on my nerves after a certain measure.
5000593
SHUN THE NON-BELIEVER! (jk)
5000594
Right, right... XD
I dunno what to say man, my shipping preferences for MLP are just different from the norm. Again, I don't dislike Rarijack, Fluttercord or Sunlight, but I don't go nuts about them.
My Applejack OTP would be either Soarinjack or Appleshy, for example. 
5000595
I concur, after Viva Las Pegasus and Sounds of Silence, I unironically ship AppleShy now.
5000596
Whoo, glad to know that I'm not alone!
I haven't really finished the season, I stopped right at The Washouts and I'm hesitant to continue.
5000599
My advice, watch Sounds of Silence and skip the rest.
5000604
Thanks for the advice.