I am still playing Morroblivion. I upgraded to version 66 (I had 64 before), and to the Dagger Galore mod, which seems to be how they will be patching it going forward.
I noticed some big differences. A lot of the textures seem to have been replaced. I am not sure if the old ones were from Oblivion, or were original to the mod. I suspect they were from Oblivion, and probably included a lot from Quarl's texture pack, which I have. So I was probably using a lot of Quarls textures for Morroblivion before.
The upshot is that it plays a lot smoother now, and with a lot fewer CTDs. I mean a
lot. So maybe the textures were causing those for me.
I also found that the Morrowind Music that came with the download of version 66 was causing CTDs. Whenever I enable it, I get CTDs. When I turn if off, they vanish.
Unfortunately it means a slew of new texture and mesh related bugs. I found several cases of missing textures that came from using old texture replacement mods for Morroblivion. I also found some loose mesh files from a previou versions of Morroblivion (all the meshes and textures are now packed in .bsa files). Or they were from a mod. I am not certain. Once I deleted those, that fixed most of them. I still have a missing texture on one small section of the Dwemer Tubes which I have not been able to fix. That's not from an old texture pack. But at least it is small, so easy to ignore.
I also have a new bug of corpses now often falling through the floor. I tried a new set of meshes were supposed to fix it. But that had no effect. Still, not a big deal though.
Finally I went to Solstheim, and found a bunch of pink trees there. So more missing textures. These I eventually fixed by installing the
Morroblivion Tree Replacer mod that is listed as being out of date, having been replaced by Dagger Galore I think. But in this case, the older mod was what I needed.
Aside from working through the bugs, I am still enjoying Morroblivion. I am still exploring Solstheim now, and plan to clear it all out and do its MQ and East Empire quests. I created my current character White Fell just for that. She's an axe-wielding Nord, and in the Stormcrow fic she is a werewolf from Minnesota, eh.