it was just stupid that you could enslave a single demon set them to a futanari and milk them to oblivion and make as much money as you could ever want in less than an in game week.
Am I remembering wrong or didn't Inno tried to nerf the slave system a few years back by making it impossible to enslave any demon?
Honestly just to make "more sense with the lore" in my runs I would stray away from demons and grind against slime girls in Submission to get Biojuice Canisters, that way I could:
1) Turn random NPC into Slimes.
2) TF them into being literal milk factories while also customizing their look to whatever I wanted/found hot at the moment.
3) TF them back into another race with the enchanted biojuice canister.
4) Enslave the newly-made Milk Machine.
5) Profit.