Loading different families into Revit leads to included or duplicated materials, lines styles, patterns and so forth. I'm used to cleaning up the unnecessary stuff (e.g. removing unused families) or updating my own template I often find out some of those are still being used. It would be useful if Revit would point out the resource I'm removing is still being used and offered me to choose a replacement instead of going for a default (of course, with the option of going back and not removing it).
