I could be wrong, but it seems from other comments you have made that you have done some f b sessions with between 2 and 3 to a dozen or two dozen other dommes . . .

I am naive and inexperienced, but after the first 7 to 10 f b sessions with two to four dommes, some of whom are insistent or commanding,
wouldn't the only major extreme question be swallowing or not, or whether the sub has done so already?

Maybe there is something more extreme I can't think of, or simply, 95% of dommes don't do it in sessions!

z