Feature requests are encouraged. This is a request pertaining to the MainUI so you would file the request as an issue in that repo:
If you’ve never filed a request before through github, you may find this guide useful:
As for the request itself, I think it’s an interesting idea. In the meantime, you don’t have to “go to items and back to rules to check the status” if you take advantage of the developer tool bar (alt + shift + D). There you can quickly build a list of items which will show you their current state in that sidebar so you can seem them in real time while you are working on the rule page.