As bimbo plots go, there isn't really much that I can say that you haven't already seen, or could go to any other thread wanting to play against a bimbo character, and read nearly the same exact thing. So just take what you know from those plots and we can build what suffices for a plot. Obviously, unless we take the slow transformation route, these are mainly going to be quick one-shots. Ones which we can both have our fun with and then move on.
Oh, and I rather not have men be turned into women through bimbofication. To me, that just seems weird and I would rather not do it at all.