What are good practices for managing older requirements artifacts and folders?

Our teams have found folders helpful for organizing requirements.
We've been doing a lot of work within a single Project Area and now there's some clutter occurring.

The content in some folders has been "back-burnered" for a while.

The specific goal that brought me here today is that I'd like to find clean ways to prevent those artifacts from showing up in "Views".

The broader question is how are people managing requirements artifacts that they're not ready to delete outright, but don't want to 'see' for a while?

Scenario:
One folder tree has a number of folders holding Use Cases. I'd like to create a view that shows them all.
'Filter By Folder' doesn't let me choose recursive folders under the parent.
'Filter by Type' shows me everything in the project area, including the back burner artifacts.

My first thought was to 'Archive' the back-burner stuff, but that concept isn't built into RRC.
Then I thought maybe the new "Teams" features could help, but that's about write permissions, not visibility.

Any tips, pointers anyone?