I think its safe to say that any future pokemon stadium or PBR will ever occur again. I mean clearly, the main reason they were made was because of the 3D special graphic effects. And now these are coming out on the 3ds, those future kind of games has now become extinct.
pokemon in 3D on 3DS < Pokemon in glorious HD on the Wii U
a Colosseum style game would still sell well. depends on what new features they could add to it to better the battling experience. plus dat announcer is awesome. --- GT: Thunderbird718 Proud 3DS owner as well