) I can safely say that My Little Pony: A New Generation was great! 
And here are my random thoughts:
MLP villain rankings: Juniper Montage · 8:28pm Feb 21st, 2019
0/10 - AWFUL (unsalvageable, never should have been made, wouldn't recommend to anyone)
1/10 - HORRIBLE/BORING (tedious, hurts to watch, a bore, no reason to watch him/her, whatever positive things about him/her are tiny and not enough)
2/10 - VERY BAD (slightly less terrible, maybe there were one or two things you liked kept him/her 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 he/she gets off the screen)
4/10 - MEDIOCRE (not awful but not really that good either)
5/10 - EH (average, didn't love or hate him/her)
6/10 - DECENT (the first positive rating on this list, fine overall, glad you saw him/her once but wouldn't watch him/her again)
7/10 - GOOD (enjoyable enough that you'd maybe watch him/her again in future, had some noteworthy flaws but is overall a worthwhile villain)
8/10 - GREAT (a solid, enjoyable villain, very entertaining)
9/10 - EXCELLENT (very engaging, awesome, you definitely recommend to anyone)
10/10 - MASTERPIECE (extremely engaging, an absolute must-see)
Juniper Montage
Let’s get this over with.
Juniper Montage tries to sabotage her uncle’s movie so she can play the lead role even though she's too young for the part and has no acting experience (which she herself acknowledged), not even considering that he might cancel the movie or get another professional actress instead.
She's incredibly petty and selfish even before the mirror corrupts her.
She blames the Humane Seven for her own problems that she brought on herself.
She then gets a complete joke of a demon form that’s meant to be powered by the mirror’s magic and the energy of all the Humane Seven’s elements combined yet has no powers whatsoever, coupled with a downright embarrassing climax compared to the final showdowns in the other Equestria Girls movies.
And finally, it turns out “aww, she just wants a friend” at the last minute and gets easily forgiven with no consequences of any kind, even after imprisoning seven teenage girls in an endless mirror dimension where they nearly died, which even prompts Pinkie to joke about how overly-forgiving they are.
Yeah, this brat can go die in a hole. And the less we see of her in future, the better.
0/10 AWFUL
LINKS TO OTHER VILLAIN RANKINGS
Nightmare Moon
Discord
Queen Chrysalis
King Sombra
Sunset Shimmer
Lord Tirek
Adagio Dazzle
Starlight Glimmer
Midnight Sparkle
Gloriosa Daisy
Juniper Montage (you're already here, you noodle head)
Stygian/The Pony of Shadows
The Storm King
Wallflower Blush
Vignette Valencia
Chancellor Neighsay
Cozy Glow
PostCrush
Grogar
The first villain in the rankings that actually deserves a 0.
Damn, that picture you put up...
I act like her special never happened cause it only serves to make starlight look like a hero
5017697
Well I was gonna go with any one of these, but I thought... nah.
5017704
I see... I myself would have gone with the second pic split between her and... that giant monster diva lady she turned into... but it's your post and all.
Wow, though. Just typing out "giant monster diva lady" really makes me realize just how weird that was. XD It's like, I know that it was a stupid moment, but the sheer weirdness of that just gets me. "Attack of the Twenty Foot Diva" or something!
5017709
Eh, maybe I'll change it at some point.
5017709
Better yet, how 'bout now?
5017722
Much better.
5017722
Wow, that does look good! XD
5017724
5017723
Now it shows off both her awful qualities! XD
Juniper Montage is pathetic. And her "monster" design looks like a Barbie Doll reject, that's how non-threatening it is.
Oh god. I hate that bitch. She does deserve a 0!