Well, here's what I think the pricing system will be, for one thing.
GB games: $2
GBC Games: $5
GBA: $8
DSWare: Any price
Anyway, a few years ago, a game called Beats came out that you could download onto your PSP. It was a music game where you could import your own music from a memory stick.
Why doesn't the
DS do this? It might even be able to use all the buttons, the touch screen, AND the mic. It'd be hardcore.