Hey
DragaX , I've just had an idea for another possible addition:
Basically, have a sort of double dare for a guy and a girl where the girl has to sit in the guy's lap for a couple rounds and whoever makes the other one orgasm more times wins and the loser has to take a shot. The two aren't eligible for any dares while this goes on, and descriptions of what happens between them is added to the normal gameplay as the rest of the group plays on normally. The idea behind the dare is for the two people to use their hands, mouths and they can obviously also grind on one another, but if both are naked it can escalate to sex with both being able to initiate it (and also being able to shoot the escalation down) based on conditions (whatever you think makes sense). I guess the dare can also be done between two girls.
As you can see from this and my previous suggestion, I'm a fan of not initially planned sex that then happens due to horniness getting the better of the people involved.
I don't think it needs saying, but this is obviously only a suggestion, feel free to ignore any or all parts of it.