Even brain dead drooling Mastermind?
Yup. Although he'd most certainly be peg-warmer.
They could always just give us Lady Mastermind instead...
But the reality is guys in suits just dont sell, especially as mass market toys-- Its why I dont think well ever see Sebastian Shaw-- (although there would be a shot as a con exclusive-- packaged with Black and White Queens in lingerie)-
Suited/ regular clothes guys just dont sell-- unless they have some kind of character hook-- Kingpin because hes super fat, JJJ because of the Hitler Stache and Flattop, The Rose- with his red ski mask.. Maybe someone like Hammerhead- because of the odd skull.... I mean we probably would not have gotten Prof. X if he didnt come with the futuristic wheelchair...