I put some suggestions into the other suggestion thread a few days ago and I have a few more now.
Supplies should be in the same inventory tab as rope, torches, lockpicks, and all the other standard backpack supplies. There's no point having tabs to separate the items that are moved together.
If you cancel a sex interaction before taking any actions it would be nice if it didn't consume the interaction (and prevent a meeting with the slave too).
To train a combat skill on a slave you need to meet with the slave and do lots and lots of actions to get TP then spend them. It's laborious and not how you would design combat training if the meeting system wasn't already in the game! I'd suggest having a training option along with meet, sex, and abuse. Consume one interaction to train a basic skill, two to train a complex skill, take the relevant money, give the slave some stress, all in just a couple of clicks.
The control screen when travelling has quite an unintuitive design and you seem to need a lot of clicks in different places to do something simple, like heal a person twice. I'd put guidance as on option on the main travelling screen. I'd make the control screen look similar to the main mansion screen with options on the left and a list of slaves on the right. Just display the items+spells in one list together and the slaves+captures in one list together.