Hi,
Could you not setup a new Roon watched folder, called quarantine, to do this; then just focus on that folder in Roon to eliminate the main library?
Hi again,
Setup the focus as required then bookmark it. Next time you want it just select the bookmark.
As for Roon moving your ‘quarantined’ files around on the file system Roon won’t do that … it does it best to abstract the file system from the interface.
As you said ‘I work better from the file system’ so that’s down to you to move the folder/files once your are happy.
As an aside the only time Roon moves/renames files is when they are placed in a Roon Organised Folder, though if you have a well organised library already I’d not go that route.