The real weirdness is that neither the ballet nor R-Ks original 4 movement suite are about Scheherazade. The suite contains 4 movements each of which is thematically one of the 1001 stories. The ballet is a kind of prequel. The lead dancers are not Scheherazade and the sultan but are the Sultan's unfaithful wife (or favorite slave) and the guy the Sultan catches her fooling around with, usually referred to as the Golden Slave. The Sultan is in the ballet but is not the scantily clad guy we see in most of the pictures and I'm not sure if Scheherezade is in the ballet at all.Some of the modern ballets have Scheherazade in a neutral. It'd be kind of a cool twist considering the man is usually in the neutral for dance.
Naughty wife and golden slave
Naughty wife and Sultan
(Tough to skate in that getup - or dance either, I imagine)
So, if Meryl & Charlie are playing Scheherazade and the Sultan, it really makes little sense to want to dress them like two completely different characters from the ballet.