The ones I don't like are Micaiah, Elincia, and Roy. :< M for being over-sexualized for no good reason; E because the lower part of her outfit looks quite bad to me; and R because he's too manly, and not cute anymore.
Leaf and Marth, however, I really like. Especially Leaf, his outfit is very cool.
I'm eh on Alm, since I don't know who he is. o_o;