I have no interest in having to subject everyone to my face every time.
I don't want to see your faces. Wait a second...that doesn't sound right. I'm sure you're a handsome devil, and I've seen pictures of BBH, and his appearance isn't going to scare anybody, but seeing the player's face serves no practical purpose. And, being phobically camera-shy myself, believe me, I understand that having to broadcast yourself is something that some will be averse to.
What I want to see, solely for the purpose of making cheating more difficult, is the player's hands at whatever controls are used, in concert with the screen. If this ultimately turns out to be infeasible, then I just won't be offering monetary incentives for MAME performances. Cheating with MAME is just too easy, for reasons I won't elaborate on, as I don't want to give anybody ideas on how to do it. As former MAME project leader David "Haze" Haywood often chided us, there is no way to make MAME secure, and trying to do so is a fool's errand.
I'll play with the concept a little and see how things work out. And, of course, nobody has to play if they don't want to. I do appreciate everybody's input, though.