How about an ask for bj option if the npc has over 800 lust for the player otherwise a bj option that has an arousal check and a 25% chance check for the npc
The thing that brings me back to COT time and time again is the randomness of the events. By modding it we are skewing the odds, but the randomness is still there. I think from a male (or any character wanting oral, sex etc) POV we should be asking for it (and possibly being rejected). Having skill/arousal/chance checks for the NPC to just initiate it would be great too. We can always just reroll to get the event outcome we want if need be. I just thought a 100% get a BJ option (if that is indeed what it is) just felt a bit strange compared to most of the rest of the game.
If it were us getting under the table or initiating the event then I guess the odds would be more in our favour I suppose with our disinhibition stats dictating how far we want to go. The NPC could always ask us to stop if they aren't into it.
Some other things that could be nice down the track some time:
As a female character we can ask for people to make us messier from time to time. As a male character we don't really have an event on the same sort of level while running around. Male characters also don't really have any event in the toilet stall with the broken door, at least not that I'm aware. I do like playing both sexes but find playing a male character doesn't have as many events so while I would like to play a male character more, I generally end up playing a female character.
Please don't take all/any of my comments as me trying to push you to do anything faster or anything you don't want to do. I really enjoy this game and really enjoy all your content so take all the time you want/need.