Thanks for your feedback!
Folders or better structuring in the list of test runs is already on our feature request list. There’s also a forum topic for it already, so I suggest you vote for that topic and change this topic to “folders for Test Plans” only: Add folders to test runs
Folders in the test plans view is not currently on our roadmap, so I leave this topic here for others to vote for it.
As a workaround for now, you can e.g use prefixes in test plan names and then sort the test plans per title.
Best regards,
Alex