Would be great to be able to color-code these things, similar to Apple's Finder. I'm working on a large project now and everywhere I look there's long lists of stuff. Being able speed up identification by color would be great.
Too bad in the newer version of OSX they took away the ability to color the entire row of the filename/folder, now they just have the "Tags" that appear as dots in a column. There was a utility to bring this behavior back that worked for a while but I think with Apple's frantic sandboxing of everything it broke with High Sierra. I really miss that, I used it extensively for organizing and labeling things to find quickly. One more reason I'm not as mad as I should be about having to use windows at work.
Photoshop layers and groups can be color coded as well, that would be a good one to look at for the implementation.