I am just wondering if there is a list of all the meshes that have been found to have bad or missing collisions, and what has been fixed so far. As I would like to start going through and fixing some of them, especially as I am working on quests I find myself finding these meshes while testing.
If there is no list, I could start compiling a list together as I am testing.

I don't know of such a
I don't know of such a list... Check with Eloth when he's back from christmas but I'd say keep track of the ones you encounter. I usually ping him directly when I see some while testing my quests.