Is there any way to see which sexual actions give stress?

Also, I'd like to suggest "riding" as a sexual action. Cowgirl, reverse cowgirl, you name it.

And for orgies, it seems like 20 actions are rather limiting. Is there a way to let some people lead while the player can still start actions?

It would also be nice if you could allow slaves to be couples and have sex without needing to start an interaction with them and watch them.

Also, and this is a side-note I suppose - is there a way to see how slaves feel about each other? I get the daily messages about them quarreling or working together, but I've no clue how they actually feel about each other. Maybe I simply haven't found the info, but otherwise I'd definitely suggest a feature to let you see how slaves feel about each other (doesn't necessarily have to be in numbers. Could just be something like "warmly", "coldly", "indifferent", etc.

Love the game! Keep up the good work! Can't wait to see more about the sequel!! :D

Which actions give stress depends on whether you have succeeded in proposing intimacy at least once and which sexual traits the slave has, so there is no easy way to know exactly which actions will give stress.  Without traits, anything in S&M, milker, face sitting, order groveling or masturbation, footjob, and anything involving tails.

While the game allows for orgies, it doesn't really support them.  The sex system was left partially complete.  You can use the constants mod to increase the number of turns for sex by changing "timeforinteraction".  Or with a decent text editor you could add these lines after line 3935 in Mansion.gd(2 tab, 3 tab):

        if sexslaves.size() >= 4:
            get_node("interactions").turns += sexslaves.size() * 5

Ah, I see. Thank you kindly! :D