Endz on 13 December 2008
I see what the OP is saying but the differences are too small to classify it as a new system. Gameboy to GBC only big difference is "omg some color!", while Gameboy to GBA is "omg lots of color and detail".
PS1 to PS2 is a huge jump, Gameboy to GBC is barely anything. Gameboy to GBA is a huge jump considering handheld power. Some might want every little difference in a system count for a whole new generation but that will be troublesome and a waste of time to do so.
