Since all the females in this game have huge udders... why not do a small scene for milking them? Like if you find a farmer's milking machine that's broken and its repair manual. The milk could even be a health item! could even build a stall in the upstairs restroom to give that room a bit of purpose. or in the basement common area.  Heck, with the massive front yard, why not just make a stable? The material cost is prolly going to be massive but it does provide some after-main-story gameplay/goals.  Could even get a few outfits for it. 

I'm willing to purchase that as a whole ass DLC.