I never got a Keldor, so I would love a complete filmation Skeletor. Boots Havoc staff, everything.
He-man I would also buy. Just for the sword if nothing else... but two short bracers would also be appreciated.
I want a mer-man filmation style...
That's about it for Varients. (maybe Clawful... He's pretty different.) The rest of the filmation focus should be on new characters.