Well maybe as far as you are concerned.
It's not about gimp in maxwell it's about finding things pascal excels at better than maxwell and using that to create features that promote pascal.
This is Nvidia not a bunch of idiots running a company they are more than capable of creating a new game works feature that is catered towards pascal..
Eh, I don't think that GameWorks was ever designed to do the sinister things that many people claim it does.
Maxwell is a very different architecture from Kepler, the SMs are vastly different, the ratio of compute units to texture and geometry units is way different, etc. This means that code that's optimized to run really well on something like Maxwell may run into problems on something like Kepler.
Anyway, I know it's fun for the Forum Conspiracy Theorists to just think NVIDIA is screwing its customers for an extra buck today at the expense of potentially terrible sentiment towards the company + bad press, but I seriously doubt that the engineering teams are doing what some people are claiming that they're doing.
I'll make the claim now: I do not believe Maxwell will age materially worse relative to Pascal. If I'm wrong, I'm sure this'll wind up in a bunch of signatures as a (hopefully friendly) "you were wrong."