Add text to the UV Editor
It's very annoying to open up an asset made by someone else and try to figure out what each UV shells are. Sometimes it's necessary to click on each one to see what part will be selected in the model and know what it's gonna be metal, wood, rubber, etc.
That said, It should be very handy if there was an option to add customizable texts to place close to the UV shells to keep everything organized and easy to differ and understand.
I've attached a very simple example here in order to be more clear.