Or do what the car manufacturers do, and keep the model number the same through successive model years.
So you would have the 2015 Geforce 235i. The 2018 Geforce 235i would then be a little faster.
Confusing? Not at all!
That would be cool but then NV wouldn't be able to re-badge outdated products nor make up/bifurcate generations out of thin air like GeForce 9, GTX400/GTX500 split, GTX600/700 split and skipping GTX800 to GTX 900. Someone upgrading from GTX480 to a 980 might think it's 5 generations ahead, but in reality it's only 2. :biggrin:
Going 4-digits to GTX XXXX would give them 10 more generations but now that they are bifurcating a generation, that's going to run out twice as fast! I think the GTX will stick around as it's now widely associated with NV, but it could get pretty hard to keep up for some people if we have the old GeForce 7800GTX and new GeForce GTX7800. I would honestly prefer the architecture's code-name to tell us what the underlying architecture is:
GeForce GTX M80 (flagship Maxwell GM200), M70 (cut-down GM200), M60 (mid-range 680/770 successor), and so on.
I would also be OK with GTX M180, GTX P180 and so on. For refreshes, they could go M280, P280. This way we always know the underlying architecture by the 1st letter, the following 1 or 2 determines what half of the generation we are on (if there are 3 parts of a generation, you just have M380, P380), and the last 2 digits would determine the card's standing in the lineup.