I think gameplay modding is possible, but iirc it's not shareable via the workshop as a precaution against malicious code. I know someone on the discord put together a proof of concept mod that had a NPC pred unload the player after churning them, but it sounds like programming knowledge was required.

Without knowing any languages or even unity I was able to create a personal mod that gives the bunny PC a bigger flare, makes them move at 3x speed and makes all NPCs churn down into much smaller condoms, but I wish I knew how to mod things like churning or voring speeds, or even how to make NPCs preds :\