Ooo, it'd be nice to have Vocaloid stuff in the game ~
If so, I'd figure Rin and Len would be Hammer Smiths, swinging around Steam Roller Hammers. But then they would turn out incredibly bulky, bleh :P
Wait, who would Miku be?
Luka would be the perfect Wizard, actually. Miku's too clean not to be a Priest.
Yayness, I'd be Miku ~
Kaito would be the perfect Hunter.