I get that. I also assume you mean to include that protection not just for women, but for men as well. Oddly, no, stop, or whatever is a desirable response in some of these encounters and so they use "safe words" established first and such; but I got ya, the intent is there to have a way to notify. That's the "when consent stops" argument.
Legally, that'll be explored. It's that there's an obvious disturbance in people's reactions to that kind of "sex" in general, but if the courts find all is proper; I don't know how you can punish a guy for, what to me is grotesque, but otherwise legal activity. I don't think MLB wants to be in the business of judging people on their bedroom habits.