I find it concievable that the next Game Boy could possibly be 2D. I also think that I would rather it be 2D, the benifits are all there.
-Longer battery life
-Cheaper
-Smaller
-Lighter
It would also keep 2D gaming alive. What if it could be the system that the N64 could have been had it stayed 2D? The next generation of 2D gaming...I think it's a very interesting question.