I would love to see the variant with the map markers. I really would like to see more map markers for squads/whole team. SL's should be able to mark every kind of threat just like you suggested for example mines. There could be some for lets say "Unknown Enemy" or "Enemy Infantry" and so on, so that you could mark stuff for your squad mates. I for example use the destroy marker a lot to mark exact positions of tanks and at guns for my squadmates.