I went ahead and leveled my top girls, giving me one sexy, two babes and two moe. Sure, it will not have any typing, but i should be decently strong against everything but babe decks. If it comes down to it i'll try to level one more of another instead, but those were the cards i had at highest level already.

That said, i guess people might not be as keen on attacking a deck without any attribute? Since it could work both for and against them.