Bigger screens would make DS games look worse and adding camera and music playback would make the DS go really slow wouldn't it? if i play music on my DS it dosen't exactly like doing it.
The GBA micro was a disaster, apple make new ipods all the time an no-one complains and as long as a 'DS2' had an original DS slot how could people complain?
I'm crossing my fingers for a completely new DS.