Just watched it last night as well, and have to agree, it's actually pretty good. Cute designs, nice animation, really love the environment designs. A little predictable and rushed in some spots, but doesn't really take away from it.
Is this one of those movies that starts off a series? Because it sure feels like it.
Now... not really
complaints, just some things that left me scratching my head a bit:
[This is probably clear from the trailer, so won't put it in spoiler, but skip reading if you're avoiding knowing
anything about it at all before watching.]
IF this is supposed to be the same world as the prior series, it does bug me that all the FiM efforts are now a waste of time. They made progress to try to make the world a better place for all species, even publishing a book and building a renowned school, but somehow relations between
the ponies themselves fell apart and they started believing total BS about each other...? I find this part a little hard to swallow.
If it's the same world, then clearly it must be many generations later, and believable with all with technology there that the FiM series didn't have, but I really feel like, even if she wasn't immortal, Twilight should probably still be alive..? But if all of this fell apart then she's either dead with her work forgotten (and with a failure now ruling or no one at all) or never existed.
The way it opened made me initially think FiM could have just been a series the ponies in this movie were familiar with, and personally I think that would have smoothed over these plot holes.
Spoiling comments...
All in all, hoping it is meant to become a series or at least gets a sequel.