Great, I look forward to your findings.
Something I also saw: at first I wasn't able to tick "Breed Snails" off after it was set, then somehow it worked. Playing around with it I recognized when Breed Snails is set "on" at the first girl it also shows "on" at the other girl. I tried to switch it off on the second girl (because I had only 1 snail), which didn't work.. and going back to the first girl I couldn't set it back to off anymore. Saving and restarting the game brought it back to work, also finding another snail miracously allowed me to tick that box on and off again. Funny enough the description of breast size changes whenever one sets Snail Breeding on and off. No debug messages shown while fiddling with that tick box.
Now I got curious about the whole breeding thing and brought a guy into the farm. I saw I could set his Breeding to stud, which gives me a list of all girls as potential partners.. and me! WTF, I'm a guy.. Mean as I am I set him to Breed snails.. which changed his state from stud to Breeding Snails.. ah well.. guess guys can't do both at once, eh?
The whole stud breeding is still confusing to me. Shouldn't the list of possible partners only show slaves who gave consent to breeding? Does female lifestock get breed by studs living in the mansion or should those studs also been set into the farm? And same question with male lifestock, do they breed girls living in mansion or should the breed girls also been set into the farm? In my opinion, I would expect consent would be needed from slaves living in mansion while everything could be forced upon farm lifestock.
Sorry for all those questions but I hope you could put some light on it.