I want Christie and Eddy to leave, just to get rid of button bashing maniacs. I was getting slaughtered by Lili once as Yoshi, so I went Christie and bashed moves. Won twice in a row. That's all the evidence I need as a reason to boot 'em.
Lili can die as well. Hate playing against her - just isn't fun. She's tedious as hell.
Animal characters can be a bit fun to play against and play with, but I guess they're kinda pointless, despite seeing a couple of players who actually do quite well with them.
About it, methinks. But yes, Tekken does need some kind of retirement plan for the oldies. Give 'em a break! xD