Every playthrough I do, I install new lands mods like Bruma, as well as a bunch of follower mods, all of which I never wind up even going to or meeting cuz I tend to stick with some of the simpler followers such as those in 3DNPC or something like that, and can't figure out how to work it into the roleplay that I go to the new lands
I have also never beat the Thieves Guild or Dark Brotherhood questlines even though I have had the game for over 9 years