Quote Originally Posted by ADKLove
group numbers = .

Maybe THAT's why Mario quit - he suddenly realized he'd be stuck doing cheesy group numbers and FORD commercials plus touring for a year. (Hoping Bo and Nadia can handle the cheese factor as well as the sure-to-be -y Diane Warren song they'll have for the finale. Maybe they'll let him co-write (presupposing he's final 2))
I honestly do not think that is the reason Mario quit, but it is an interesting theory.