Right now I'm at an in-between phase where half my friends I used to play GTA with have PS4s and the other half still don't. I tried jumping back into the PS3 version but the performance issues are painfully jarring after playing the PS4 version (even if it barely runs at 30fps, it's still far more consistent than the PS3 version).
Heists would have to be nothing short of amazing to get me interested in GTA:O, I don't see them being that much different from regular missions