What if PSP2 and 3DS are Download Only?

[okr]

I wouldn't mind if the games for 3DS and the possible PSP successor would be download only as I like DL services like PSN, WiiWare, GOG, XBLM (which I don't have, but I bet I'd like it). The poorly designed, oversized DS cases are the only aspect of the system I always disliked.