Not sure if this is something for Start8, but ...
I would like to be able to 'pin' the Metro Start Screen on one of my monitors so it's always visable and I can watch the live tiles while working on the other monitors. If I wanted it to go away, then just 'unpin' it. Launched apps from the pinned Metro Start Screen would show/start in another monitor.
Something Start8 could pull off, or make another app ?