For the GM mode, I would like to have different layers of visualization in which you can see, at a glance, what the dependencies between objects on the map are and you can interact with them right away. I would imagine a quest layer in which you see all the npcs giving quests and all the objects related to them. Another could be the npcs, the monsters and their factions. Another, the unseen world, like ghosts and hidden objects.
We could imagine as well an abstract layer in which interactive objects are seen as polygons and you can access to their stats and description by clicking on them.
It should be very iconic rather than swarming with text so it would be easy to distinguish a scene as a GM and interact rapidly to improve it for the players.
