A couple ideas to use at your discretion;
-Sidequest line where if the lust doll achieves level 50+ in any given stat, they have the opportunity to meet an eldritch god if they walk into a very specific rock in the Abandoned Town
-In any area besides New Ark or Transylvania, you can randomly encounter a Shapeshifter who randomly takes the form of any NPC that you've met, draws you close, and then either attempts to kill you or attempts to fuck you to death. results may vary based on player reaction (and resistance stat)
Some Requests;
-Could you add a few more scenes that induce Anal Pregnancy or Cumflation? There's, like, one of each so far
-Speaking of Cumflation, I think it'd be fitting for the Succubus's defeat sequence (should you fail the Nimble check) to induce the Cumflation status
-Maybe there should be, like, horse stables at the Milk Farm? I mean, they have to carry milk across the wastelands somehow, and there could prolly be a bit more improvement content there
-Bestiality Shrine in the Sanctum which toggles feral dog enemies in Abandoned Town, giant slug enemies in the Forbidden Forest, and allows you to be fucked by the horses in the Milk Farm from the previous suggestion
-let us steal guns from the new ark city police department /hj