I have always had this idea for a map (any offense/defense map. really) where one team controls an intel room with many video screens showing key points of the map (and whatever is going on there at the moment), and the other team has the ability to temporarily take the system offline. Probably won't work in any current Halo game though. Maybe it could be done with HL, since 'they' got the "viewpoint A displayed at location B" to work in Portals to work.