There's an absolute need for a very simple new feature.
My sims are constantly falling in love with their in-laws. And while it may be fun in certain ways, I really would like to be able to control it. My idea's simple : add a "view as family" in the relation dialog menu that just disable romance between two sims. It could be turn off the same way (if you want your sims to have an affair or if you want adopted children to finally fall in love).
Because, the elderly step-grandfather of my sim woohooed her just as she turned young adult, and while it is VERY realistic, I would like to ignore this part of reality in my game, please.
I could try to find a mod to do that, but I would find it very sad, for something as simple and as logical as this little feature, so please upvote this if you agree !
