A Men's Multicolore range, or at least more manly looking Women's MC bags, like the MC Keepall. I think a Black MC Pochette Melville would look great (although would cost a lot!).
And also an MC tote in a similar style to the Sac Plat.
Also a whole MC luggage line, with maybe things like MC Poche Toilettes and an MC Sirius or MC Steamer. <-- I know they wouldn't be very practical but they would look great!