It's been a while (well... over a year) since I last played it so I don't remember the exact names and I don't want to dig up my external HDD to find the ones I downloaded. In any case, here are some mods I used that made a difference.
- texture mods that make the environments look better
- more realistic lighting, skies, and weather
- LOD texture (or something like that) that makes distant areas (like a grassy hill) not look as ugly and muddy. I believe there's also something for more tree's in the distance.
-I didn't use any, but there are some great UI mods that better sorts and shows more inventory items on screen, adds a colored map, ect.
There's also some mods for shopkeepers to have items they normally wouldn't have. I jumped through hoops (especially doing stuff like having to wait for days) getting stuff like the vampire cure and black soul gems, I'd personally rather just add a mod that makes a person sell these items.







