Next Generation has up an interesting piece considering ways to make the ultra-successful Nintendo DS even better
. Thoughts include streamlining the needlessly complicated 'friend code' system, adding internal flash ram to the device, and rolling out a virtual console system ala the Wii. Their best idea, I think, is to use the GBA slot on the system for a cartridge including all of these new elements: "The advantage over typical 'system upgrades', like the ram expansion for the N64 or the PS2 hard drive, is that this cartridge should have little direct effect on game software; it would simply transform the DS into a more useful and personal tool. Such an update would also weed out the necessity to offer a whole new DS model, further annoying people who felt forced to upgrade to the DS Lite - itself only a cosmetic adjustment."