"Models" (over sprites) or "3d movie" 3d?
Models over sprites is because the sprites have lost their charms (look at the HGSS, at least half of them have SERIOUSLY messed up shading)
3d models. You know, like in Stadium/Colosseum/PBR.
Would I want models? Nah. I don't know for sure, but I think 500+ models would take far too much memory
The 3ds can support game cards up to 2 gigs (as of release). And with the prices of memory falling fast, they might be able to fit more.
There is always cel shaded graphics. They can then make it as cartoony as they want to.and be ultimately pointless in a primarily sprited (or sprite-esque) game. It would just look shoved in there. If Generation 6 or the third game decides to turn it 3D and the hardware can take it without looking stupid, I'd say they can go for it
Pokemon was ruined FOREVER back when HGSS changed so much. A while later, everyone got used to it. That would probably happen all over again, after all, it happens every time a new gen/game/remake/whatever comes out.but that would probably ruin the franchise FOREVER for many fans.