I think I can add a couple of things which might explain what they will go for on ds.
Driver2 is a good example of what they might do with limited RAM I agree. Also there are the Transformer games on DS that show how an open city game on DS would work, though I thought those games were kind of ugly.
The most obvious example I can think of is Body Harvest. It was developed by the same guys that went on to GTA, and in essence it was a very basic example of what the 3D gta's went on to be.
So imagine a better textured Body Harvest, with smoother frame rate, that might be what they go for, but they might have to break up areas when on-foot as compared to in-car.
Bookmarks