I confirm that Remote Play on PS Vita is awesome in this game. Coop and Patrol missions are great. I tried some PvP and managed to be not that far from the top of the list, but it was pretty hard and maybe I just got lucky.
I think that both the first and second Witcher should be ported to PS4. But the Witcher 1 needs a lot more work, so I'd go with just the Witcher 2. The hardware is not a problem anymore :)
Can't wait for the release, but as PS Vita version is going to be two weeks late I will have to wait too <sad face>
So if laid-back atmosphere of GTA games is ok, why Hatred, with some more gore, black&white setting, but with the same kind of killing is any worse/different?