3D brawlers like Power Stone or Ehrgiez
There's a game coming out similar to it. Looks great but it's missing that fun environment from Power Stone.
More mainstream 3D platformers.
Ratchet and Clank looks amazing on PS4 and if the ycould bring back more games like Ape Escape, Crash, Jak and Daxter in that way it'd be great.
Also more fun 2D/3D fighters like Bloody Roar, Rival Schools etc.
I like SF but I find Rival schools funner.