I'll be adding a button for skipping sex scenes after unlocking the scene for the first time and as for the combat, I won't be doing a complete overhaul because I want the combat to be as simple as it is.
I've been looking at the card-based games like you've mentioned and even bought the popular one, Slay the Spire. The overall experience is fun! especially the card-based mechanics! might be implemented on it! or make a new game with that mechanic