I have absolutely no doubt this is going to happen. Ever since the release of San Andreas, there has been this creation of entitled brats who won't be happy unless they get everything their own way.
Unlikely, but I do believe that it isn't going to be the step ahead that most are expecting of next-gen...But surely will be a step ahead of current-gen's GTAV.
GTA IV was a step ahead of San Andreas that was also on a new gen console, yet it was still bashed by the curse of the GTA series aka SA fanboys.
Wouldn't it technically have started with Vice City? I remember hearing quite a lot of complaining about how San Andreas did not feel like GTA because it wasn't about a white mafia guy. It could have happened to Vice City too after III. Though,I never heard about it. These kind of people probably existed for GTA2 when GTA III came out and GTA when GTA2 came out. We've just made it a lot easier to find these complaints now. A side effect of how much we can share over the internet I suppose.
I never really heard anyone complaining that SA didn't feel like GTA if I'm being completely honest. I'm not saying it didn't exist, but it was nowhere near as prominent as it became when IV released. For years, all we got was..."wahhh no planez wahhh no car cuztomz wahhh no haircutz wahhh no c*ntryside wahhhhhh!!!!"
R* brought all this back, and now it's..."wahhh not enuf interiorz wahhh no gang warzzz wahhh no crouching wahh no bowling wahhhh!!!!".
Like somebody said in another thread, R* should just stop listening to these cry babies, as they're never going to please them, and make the game how they want to make it.