Personally, I like the idea, but I think it should be somewhere in the middle. Where the altercation is already widely accepted, but isn't in fulll development. I would like to think it would be because a new set of Alicorn princesses came it and decided that it needed to be a G3 utopia. This is perhaps 50 years after their arrival and nearly 2 thirds of the world is G3, and then we see a select group of resistance based in Ponyville, trying to convince everyone of how it is now is not how the world should be, and that conflict is natural. Also, wouldn't it suggest that all the zebras and bison and such are no longer around? So, maybe the resistance is the non-pony characters of the world, and perhaps, they end up being eliminated because they refused to reform? Just an idea, but I really like this.