Yeah, but all that can be countered by the fact that they wanted to renew the character list, but still "keep" the old skins like with phyrra that looks like Cass and Soph or Leixia and Xianghua. When they tried to do something they did it wrong, just look at Xiba, Natsu, ZWEI... *facepalm* ^^
The malfestation part can't be a real argument cus it acts however it wants (ex: Ivy or Tira)
As for the voice actor they used somebody that they know :p and I think that Amy would have changed her voice if she age
(And not sure for the eye color part, and if it is the case why would she keep the eye color but lose the hair color?)