What exactly do you like about the slavery/sex system in this game?
Thematic?
The lack of long term injury, the orange/blue morality, the implication that to "Fix" the system one would have to literally end a god.
Actual mechanics?
-The still prototype occupation/role system. Being able to assign jobs, tasks, permissions and schedules.
Wishing Inno actually put effort to make it feel like the NPCs were actually working and being productive in those tasks.
-The NPC with freedoms uses said freedoms and the interactions are recorded in the logbook.
Wishing more scenes were written than the basic meet and pork.
-Guests being independent and productive off screen.
Would have been neat to actually setup vignettes where players could visit them at work.
-The Relationship system is decent.
Could be more fleshed out with more branching outcomes and endpoints.
For a system written 6 years ago it was revolutionary in its simplicity. And Inno never touched it again.
Edit: And how the engine chugs trying to keep up with a full household...