I think over the time that graphics have become a much bigger selling point for RPG's than other genre's, because they are mainly story based and battle based and exploration based... no actions and other stuff can really enhance the game play further that is why I personally prefer the pretty RPG's... some of my favourite moments in gaming have come during some RPG's when I have discovered a new land and just seen how beautifully it has been designed... some of these first came about during Chrono Trigger and Chrono Cross, then Grandia 2, then Skies of Arcadia, then FF12 (i skipped from 9 - 12), DQ8 and Kingdom Hearts.
I wish more J RPG's were on PC so I wouldn't have to buy a 360 for Blue Dragon and Eternal Sonata :( :( :(
BTW did people see news about the Naruto RPG on 360 with full cell shaded graphics looks TOUGH
ALSO more on topic I think Wii will own sandbox games (after playing godfather i make this decision) and sports games more than anything else.
Plus simple fun games from Nintendo (oh and old school)