Meh, I'm indifferently tolerable to the whole Twilight alicorn thing. One one hoof, Twilight did progressively grow as a character, and the season 3 finale (in my opinion) actually did a really good job on bringing that character arc to a happy and satisfying close. In fact, the ONLY thing I see wrong with the twilight alicorn thing is that I think they kinda jumped the metaphorical gun on this character change. There were soooo many possible stories and scenarios and whatnot that could've been told with Unicorn Twilight, but now most of those possibilities are gone. They probably could've waited another season or two before opening this ark of the covenant and gotten the same satisfying result without the heavy fan-based backlash. (Oh well, Hindsight's 20/20 apparantly).