Hey @purrsoundsystem, thanks for your wish.
May i propose to solve this via a tagging system.. maybe?
There is an existing wish for the Play, if implemented it would probably make its way to the Mini/Tracker+ as well.
And since it is a tagging system - with this wish in mind - it could be easier to implement. As you can reuse a lot of the existing functionality. Usability wise it would be great as well, to have the same behaviour across different parts of the UI.
Here’s the wish in question for the Play: