Morrowind-Modular-Mod-Guide VS morrowind-improved

Modded, absolutely. There are so many huge improvements from mods, it's crazy. There's a simple modding guide with essential mods for first-timers here https://web.archive.org/web/20210924034042/https://danaeplays.thenet.sk/morrowind-first-time/ and a more complicated guide here https://github.com/doublemoulinet/Morrowind-Modular-Mod-Guide or you could just use a Wabbajack modlist.

Or this more complicated one: https://github.com/doublemoulinet/Morrowind-Modular-Mod-Guide

Morrowind Improved goes into further detail about setting up the game. The Morrowind Modular Mod Guide has a similar level of detail.

The most up-to-date and comprehensive guide I'm aware of is Morrowind++ Now I personally didn't follow this guide specifically (my own game is a combination of it, Thastus 2020 and MGG) but it looks really well made on it's own.

Morrowind++ (Shorter but extremely comprehensive vanilla++ guide of Morrowind, up-to-date and seemingly very well made, well-chosen QoL mods that mesh with the vanilla game. If you follow one guide, this is probably your best bet.)

Morrowind Improved goes into further detail about setting up the game. The Morrowind Modular Mod Guide has a similar level of detail.

This is a decent modding guide that includes a lot of the more recent mwse stuff. Here's a big list of lots of great mwse specific stuff, though its a few months out of date at this point. In particular I have found Ashfall to be particularly amazing, which is basically skyrims frostfall in morrowind (though better in some respects imo). Character Sound Overhaul, Aura, and MUSE cover sounds and music. Watch the Skies is a fantastic weather mod. Mort has an huge number of gameplay improvements to things like stealth, leveling, game balance etc. Theres honestly way to much to list in just a single reddit comment.

Morrowind ++ (Shorter than Thastus or MGG but equally comprehensive, vanilla and QoL focused and pretty up-to-date)

https://github.com/Sigourn/morrowind-improved/blob/master/readme.md#morrowind-a-morrowind-modding-guide

I saw in a comment you want to improve the graphics, this can be as easy as using MGE XE or OpenMW for distant terrain and Morrowind Enhanced Textures to upscale the old textures or as complicated as following a guide like Thastus 2020, MGG, or Morrowind++

Follow this guide and you'll be fine

A modern modded Morrowind has all the quality of life you could dream of. Of course, installing all these mods can take time, but luckily you have a few options there as well. If you want it quick and easy, we have YAJAN, a very respectible modlist using Wabbajack, If you don't mind a bit more manual effort in exchange for more customisability, Morrowind++ is an excellent choice.