Also, a note regarding tree replacers: newer mods such as Remiros' Ascadian Isles Trees are quite good, but you should avoid Vurt's trees if you are playing with Tamriel Rebuilt. While his Bitter Coast trees seem to mostly work, they feature some pretty ugly meshes (third from the left on the bottom is infamous) and you're better off just using a retexture for the vanilla trees such as Bitter Coast Redux, which does also offer a retexture for Vurt's trees if you're a fan. His Grazeland trees, in the case of TR, should be 100% avoided. Even with the vanilla-friendly edition which removes the infamous FAT TREES, the meshes often do not line up correctly with the length of vanilla trees. This means that, while the vanilla landmass looks fine, TR will often feature floating trees etc. as the devs have opted to use the entire length of a vanilla tree mesh, rather than leaving part of it lying underground as per vanilla.
The Morrowind Graphics Guide is actually a very good resource, with most of what's on offer being high quality and an objective improvement over vanilla. What isn't often sticks out immediately (usually mods made by Russians included for the sake of retexturing literally everything), and a judicious and discerning reader will be able to sort the wheat from the chaff. Avoid shaders if you like the vanilla look, install mods and retextures one by one to make sure they don't suck, and use Mod Organizer to make the sorting process relatively painless.
The Morrowind Graphics Guide is actually a very good resource, with most of what's on offer being high quality and an objective improvement over vanilla. What isn't often sticks out immediately (usually mods made by Russians included for the sake of retexturing literally everything), and a judicious and discerning reader will be able to sort the wheat from the chaff. Avoid shaders if you like the vanilla look, install mods and retextures one by one to make sure they don't suck, and use Mod Organizer to make the sorting process relatively painless.