What would you like to see? Here's my list:

Dragon Quest (wishful thinking)
Final Fantasy
Gran Turismo
Grand Theft Auto
MotorStorm ( la Pacific Rift)
Ratchet & Clank

That's all that comes to mind, as far as established IPs are concerned. I'm sure I'm missing out on some obvious ones but I really like JRPGs and open world games the most, which I'm sure the Vita can handle.