Haven’t played it in forever but I’m leaving this comment to tell you that modding it is extremely easy and the nexus has developed tools to make it impossible to screw up.

You should be prepared to say goodbye to your family and friends, though, because you’ll be looking at at least 500 hours of fun once you’re all set.

I used TES construction to make a merchant who buys everything and has large amounts of money put him in Seyda Neen lol that was years ago.

Yes, I have a good deal of Morrowind modding experience. Best game ever. The MSGO is the quickest and easiest compilation to use, but it's still a bitch to set up and uses a shady installer. You will need to probably update the graphics extender since the one it uses is outdated. Do that AFTER initial full install, ditto with the Unofficial Code Patch that came bundled with it.

You will probably need to generate the distant land meshes several times to tweak for a proper balance of eye candy and performance through trial and error; need to find workable distance settings for your PC. It comes at a hefty hardware tax- needs good GPU and CPU.

The mods break some access point links (doors), and a few models get borked. You will need to fix those manually in the construction set whenever you come across one. Fortunately, they're rare. Off the top of my head, I can only remember a door to a tower in Suran and a table in Mournhold being broken. I think there's a corrupted shirt as well, so the game will crash if a nearby NPC happens to be wearing it. These are easy enough to fix- just look into the crash logs for any of these, find the culprit (usually a bad .BSA), rip the stock one from the the game disc or download a fixed version, then replace it.

With distant land, player object-oriented landscape changes such as the Shrine of Boethiah, Ghost Fence, the Great House fortresses that you build, and the town you build in Solstheim will not render their current states at distance unless you add the meshes to the distant land generator manually. I forget the exact details on how that was done, but it involved creating an exceptions list with proper state flags, importing that list into the distant land generator, regenerating your meshes again, then checking to see if it worked and what, if anything else needed to be checked, and regenerated again until right. It's profoundly annoying if you're anal about visual inconsistencies and pop in. Thankfully, there are few places/things in game where this applies.

I also added some quality of life mods such as a Mark/Recall mod that allows up to ten fast travel locations, and a mod that allows you to join all three Great Houses. You may also want the official Bethesda mods: Fort Firemoth, Archery Effects, and the Master Propylon Index.

For shits and giggles, I was working on creating a "pocket dimension" mod that lets you throw a trapdoor on any ground surface to dump spoils in, then roll it up and stuff it back in your inventory. If I ever find time, I might finish it since it was mostly functional and needed just a few scripting tweaks.

As for OpenMW: Don't bother. The engine is fantastic and leagues more optimized than the official, but it is incompatible with virtually every major mod. It's good for an ugly vanilla experience and that's it.