as with many of the ds games,anything on wifi and the such would have tobe limited in the player amount...probably 8 playrz,tops. im not going to get into how hard the system would have to run. in comparison, it would be like running trem on a pc from '95 (that hasent been upgraded EVER) without any lag or a low ping number.
though as i said previously it would be awesome to have ported, though quite unrealistic. maybe the next generations of portable devices....though it may work better on psp than ds.