Show buildings' duty cycle

It would be nice if you could see the idle/not idle ratio of each building over some time period or set of time periods, like over the past month or something and expressed as a percentage. It's useful for diagnosing problems in production chains. Often I'll check on a building - see that it's running, but not being certain that it is running continuously I'll need to sit and wait a while to see if it will go idle from lack of input or a full output. With a duty cycle I could instantly see how it is doing.

An OK example of this is Satisfactory's productivity display. There are some issues with said display, but it really does help to be able to tell at a moment's glance whether there might be an issue somewhere along the chain.
Knowing that it is working at this precise moment doesn't help very much if it's something like "whoops, forgot to build one pipe leading to one machine feeding this machine".