Currently if you look in Windows 10's Task Manager you'll see a bunch of "Firefox" named processes. My suggestion is to add a distinct ending string to describe what each process is for/doing.
Often it seems a process is doing lots of work for a particular URL/tab. I'd like to be able to see which tab or add-on is doing work outside the Firefox Task Manager. It is a fine new feature, but it can be useful to have multiple ways to find information (and verify it).
Ideas for names include...
or more complex...
If they change often this might add a good deal of extra work, so I understand if it's a feature that's disabled while on battery. But for debugging or profiling it might be a handy way to estimate for regular home users.