*Some minor spoilers ahead*
Just saw it, and I have to say I enjoyed it. It's neither the greatest thing ever, nor the worst thing that could happen to this fandom. I really had fun watching it. The writing (without talking about the premise) is on par with the show. Twilight was very Twilight, Fluttershy was her adorable self, Pinkie was just all over the place. The other three didn't get as much to shine but weren't out of character either.