This is very far off my normal playstyle! My sims live in my head, they have personalities beyond traits and emotions that dictate how I play them. Limiting them to two emotions wouldn't make them deeper, but more shallow. It does sound like a good idea for a challenge, though!
On a sidenote, I used to have a mod that allowed users to define certain activities as liked (causing strong happyness) or disliked (causing strong tenseness) by a sim. Choices were between very broad and very specific categories, so you could set "Socializing: all" as a dislike or just "Socializing: Friendly". While it worked, this mod really made my sims come to live, as close to how I imagined them as they ever could in gameplay. I do not remember what exactly this mod conflicted with in my game, but I'm not using it atm. Might need to look into it again.
If you'Re looking for deeper personalities for your sims, you should take a look here: https://triplis.github.io/mods/love-and-hate.html
