So I'm not too familiar with professional animators, writers, etc, but if/when I make an anime, I want it to be very abstract and creative. One of the things I love about anime is escaping reality, so I would definitely create a world with its own laws and probably magic. It would also most likely be in a medieval setting.
OOOORRRR
I would make a Pokemon reboot similar to the B2W2 trailer. It would be a much mature version with an in depth plot, character deaths, and better romance.