They were fugly in 360, imagine them in PS4. Recycling 2002 Spiderman 2's "New York" (20 blocks of Manhattan) map would lead to that though. That said, this prorably means there is a Prototype 3 coming.
Yeah, they will most likely make the game prettier because fun as they are, neither of the prototype games hold up well today. They were pretty ugly at release already. Fun as hell though.
If they do anything to the gameplay it have to be bringing the patsy button back.
Blaming some innocent soldier for being an evil mutant and seeing his friends shoot him down was terribly satisfying.