Basically that Q...
Is she too big/too small
Is she too associates with X Factor
Is she too expensive
Is she too experienced at dancing
Did Simon tell her not too?

wouldn't she be overqualified with dance experience?

Dannie who???

I'm assuming Dannii Minogue

Minogue, I guess.

Although having the 4'6" Claudia as a contestant this year answers the 'too short' question.