this!I'd like to see V, VI or IX ported to the 3DS. VII & VIII really deserve a high definition remake, something Squenix have repeatedly said is infeasible for them to do right now, but I'm happy to wait.
Honestly, though, what's wrong with making a whole new Final Fantasy for the 3DS? They could really go back to their roots with it and make it a little less linear than recent games.