I spent a lot of time mucking around with the mods too. Have to be real careful with performance. I used to swear by SMIM but even the Lite version is tough to keep running over 90 so I no longer use it.
So I finally ended up using these visual improvements!
Textures, the best I’ve found so far is Skyrim Realistic Overhaul:
overlaid with Noble Skyrim:
Noble looks different to Vanilla style but it gives a really nice unified look, like it was done by actual artists rather than randomly cobbled together (cough Skyrim 2017 Textures cough)…
For textures that Noble doesn’t cover, then you get the Skyrim Realistic Overhaul textures showing instead.
Weather; Obsidian, which includes the nice mountain fog:
Vegetation; Simply Bigger Trees is nice as the default trees do look kinda small in VR. Others I’ve found are just too expensive or have issues, esp. grass stuff like Verdant or Flora Overhaul:
Water; Realistc Water 2 is better but I’m not sure it’s the best. Not tried any others, open to suggestions!
Enhanced Magic VSFX, improves the horrid flat sprites that appear in your hands when casting spells:
And as mentioned earlier, WICO greatly improves the character faces while not going too overboard. ‘Less flush faces’ option reduces the heavy eyeshadow look: