1. Morrowind Code Patch includes a fix that permanently turns on the ownership tag for items. Basically the console "tfh" command, except permanently on all the time, and if possible modified to hide scripting info (using the console command still works normally), and just show ownership. Note this is a partial fix to the overall problem, but would fix a large part of it.
2. Unofficial Morrowind Patch Project- Many items in the game are owned by ridiculous parties (like generic guards and random Npcs). It would be far more sensible to tag most items to a particular faction than people, and some items should probably be renamed to reflect their quest importance. That is, if this would be considered a fix.
3. If not, I propose a custom plugin be made to fix this issue, hopefully one not requiring external tools like MWSE.
Any opinions?
P.S.- A combination of one and two would probably be ideal to fix this concern.