Both in Morrowind and Oblivion I use a weather control mod [I wish there was one for Skyrim]. I always select perpetual foggy weather.
1 My game is stable without weather related lag. [both]
2 Hides popup buildings, landscape, leading edge of grass [Oblivion]
3 A haunting enviroment, especially at night. [Both]
4 You can't see the villains until they are on top of you, especially at night. [Oblivion]
5 In Skyrim the distance settings shrink as the save file gets larger.
6 To hide reduced settings on lower end computers.
Such a heavy mist or fog mod would appriatiated. Thanks