Even if the title role is off the cards, they could have the Chinese fitting Jackie with their own version of the suit. The great thing about the suit is that even an old codger could operate it, with Jarvis conducting some of the more complicated functions. Not to mention the fact that in The Tuxedo, Jackie uses the eponymous suit to kick ass.
The Mandarin character is a bit too culturally insensitive for an Asian to play, hence Kingsley's humorous characterization.