You're missing out on 99.9% of the fun. Windfall was excellent for a low level character, all of Simyaz's stuff is gold, etc. DoA merges in perfectly, and Unique Landscapes deals with spicing up the default landscaping.
Also, think about giving Morrowind a shot while you shoot the breeze for TESV.
Yes, I am aware of the fact that Morrowind is the greatest game ever. Other games weep that I could not love them the way I loved Morrowind. Unfortunately, I don't have Morrowind, and for this reason I am sad.
And I know that I'm missing out by not having played quest/content mods. That's why I'm asking for recommendations. ^_^