It would be awesome if there could be some reverse type of power dynamics ie. a frail looking guy is actually the dom in private with a muscular jock. There can be chastity, remote controlled plugs, hidden ownership marks near the crotch area etc.
I like the idea. Of course there is a lot of different kink stuff I want to play out like those you are just talking about. The idea of the hidden ownership is a very interesting idea. I might use that...