What a coincidence, I just got my boyfriend playing it too. I can watch him play ultra modded Skyrim. Over 200 mods. It's a shitshow, but fun.
I haven't played it in many years, but last time I had just some things to give it darker lighting and make torches do stuff, some new spells, and various visual improvements. Blood cannibalism too. I played mostly a goody-two-shoes young imperial with heavy armor, sword, and shield, and using some restoration magic. Basic stuff, but good. Commit no crimes and never deny a plea for mercy, that was my personal rule. Also didn't use sneaking.
While my bf's playthrough has lots of stupid stuff in it, he did find mods I'd use on my own some time. The mod that gives hima ton of more interesting necromancy perks also has totally overhauled perks for armor and weapons. I'd like to go for a different paladin character again, or maybe the opposite and do a cannibal ranger that crafts things with human parts.
Not likely to play myself any time soon, but it's a thought.