I've made a basic plugin that collects and zips all the textures used in a revit project. It also lists all textures. I might polish that up a bit and release if its helpful for people. This should aid in sharing/archiving the textures on a project. I was also thinking of adding a smart "relink" maps feature.
Pieter that would be wonderful if you can release such plugin.
I have been searching for this for a long time.