I've recently started teaching myself some modeling and I find it much more fun when I have a project to work on. Sadly, I've got a long way to go before I can realize most of my ideas, but I did think of one case where Morrowind could actually use some less detailed models. That place is (at least IMO) the Telvanni interior's collision boxes.

Like most people here I love to play Telvanni, but the one thing that's always annoyed me is how cumbersome walking around in their structures can be. Levitating I can deal with, but it's all those roots that bother me. The idea behind them is fine and makes sense, it's just that MW's character model seems to get stuck to each one like it's a magnet any time you happen to brush against it.

So, after plenty of googling, learning about RootCollisionNodes, scratching my head over blender's import/export behavior, and a lot of fumbling around with tools I have no idea how to use, I ended up with this simple mod.

Basically all I've done is replace all the smaller/narrow Telvanni corridors/corners/ramps/etc collision boxes with very simplified/optimized versions. See http://i.imgur.com/DuThPXL.png.

In theory there should be at least two benefits to this. Firstly, which was sort of the point, there's less geometry to get stuck on. Secondly, as a bit of a bonus, the amount of polygons is significantly reduced, which might actually help FPS or loading times if your computer is already struggling.

It's still far from perfect. Especially on the ramps you can still get stuck pretty easily. I'm not really sure how to go about solving that completely without remodeling them. There's also a bit more clipping now, but that's kind of fundamental to this issue, so it should be expected. I'd easily prefer some extra clipping over actually getting my character stuck all the time.

https://www.youtube.com/watch?v=9jOLl02OSLU's a before/after video to show the difference. I had to keep it short and compress it a lot since my upload speed isn't the greatest, hopefully it's not too bad.

It probably didn't need that much of an explanation, but this is my first release.

I didn't touch any of the actual visible models, so it should work fine with other mods/texture replacers, so long as they don't replace the mesh. (I've never seen any mods that replace these meshes though)

https://www.dropbox.com/s/49t001zlmop5u1n/TelvanniCorridors.zip?dl=0