I realise this is likely quite an involved idea, but I present it for your consideration: what if the thumbnail previews for windows displayed an image of the entire workspace (either just the specific monitor or the full workspace) on which they are present, with all of the content other than the actual window preview dimmed (and/or the actual window highlighted somehow, with a bright border or similar)?
I tend to have specific content windows in fixed locations on different workspaces, so in combination with the sorted workspace id/monitor id this would provide a faster visual indicator of which window is the right one.
I realise this is likely quite an involved idea, but I present it for your consideration: what if the thumbnail previews for windows displayed an image of the entire workspace (either just the specific monitor or the full workspace) on which they are present, with all of the content other than the actual window preview dimmed (and/or the actual window highlighted somehow, with a bright border or similar)?
I tend to have specific content windows in fixed locations on different workspaces, so in combination with the sorted workspace id/monitor id this would provide a faster visual indicator of which window is the right one.