Helena's costume(s) isn't so bad after all. Another pencil skirt, but that's fine...
This new mechanic is really fun. I'm glad to see Team Ninja still tries new things even though the game was released a while ago (breakable costumes for instance). I think transformation is something they'll keep for DOA6, but I'd like to see real concepts from the artistic deparment.
However, if DOA were on a Nintendo console, I'd say a Metroid Pack would be nice. Especially after seeing this ZSS costume Tecmo freely used in Fatal Frame. The transformations would make sense here.