I just got a 3DS a few days ago, and let me just say that Hoenn would look absolutely amazing on that system. Hoenn is probably my favorite region but the GBA graphics don't do it justice at all. Seriously, places like Mt. Chimney, Mt. Pyre, Meteor Falls, Fortree City, Sootopolis City, etc. would be astounding on the 3DS. And underwater... oh, man.