Multiple Category Feature

This is actually something that used to be a standard feature but I was told to request it as a future feature.

For sites with LOTS of files, there is an "M" you can click on for the Main Category. However, it would be great if that main category was listed in the "Categories" section on the file details like it used to be. Since the overall look is different in that area, maybe add the main category to the list of other categories and add the M to it. Basically, if a file is searched for on the back end, when you click on the file, there's no way to know what category is the main file category.