Didn't know someone from the dev team here in this thread. So if you don't mind I'll make a couple more comments about my gameplay experience.
Firstly this toilet needs mechanic a little bit to much. Not everyone into this fetish, so for me this mechanic no more but a chore, instead of concentrating on more interesting part of the game, I must spend literally game hours in toilets. With food and drink it's easier you can do it while you running for which I thank you. So, about toilets, make this mechanic optional for those who like this fetish. Like you can go in toilet whatever time you want, like in some Jrpg games, you come in certain toilet do your things and also you can trigger sex event - so it's double profit. I believe that all this realism mechanics or whatever reason they was created should not be the main activity in the game, instead the main place should be occupied by the plot, events and scenes. For now there is not much you can do in the game, only few quests, but when game become bigger it will be huge problem, if the player, instead of concentrating on the story he is interested in, will be forced to be constantly distracted by eating and drinking. I think there must be some line between a tiring activity and the reward for doing it. Now it's hard for me to tell how, but one of the idea is giving bonuses to character characteristics of high quality food.
Sex scenes. I mentioned in my previous post about QTE system, it's disaster, nothing to add. My suggestion is add real interactive sex system, and switch from keyboard to mouse for obvious reason
One of this system I've seen in few games, it's very entertaining and involve player into process. Your every click it's thrust, or move, the faster you click, the faster your character moves, and more arousal generated. For blowjob mechanics I personally would love to see some kind of variation of Super Deepthroat flash game, where you move your cursor and girl move her head. I've seen Architect made such mechanic in his game Hack & stalk. I don't know how hard it's make it on UE so it's kinda blind suggestion from my side.
Photographer event. The best quest so far, IMO. But I think it could be improved to give player even more satisfaction during going through it. Like you only able to do it once in the day and only for 1 hour, which quite unfortunate. I did it few times in the day, but I think it's kinda bug use, but it gave me much more satisfaction, than if would do it only once. Make few poses during one session, like girl come to the stage and photographer guide her, give her tips, and she taking different poses depending on how far player progress the quest. You can even make minigame in it! Like player will have choices which pose to take, and depending on answer she can earn more money or lust points, or both
Lastly, I would love to hear and I think others players too, how to progress this university quest and tutoring quest which I mentioned in my previous post, or they don't finished? And I'd love to know do the physical indicators (like leg muscles etc.) affect the appearance of the main character?