Map Item Buff
Maps are great for solo information, but sans comms it's hard to disseminate that information to other Survivors.
I propose a buff to fill in that comms gap and to give the map some team-play interactions:
Place Marker Action
Press the Active Ability Button while channeling the Map to place a Marker of Light, consuming 4 charges.
While not being chased, standing near this Marker gives the "Reveal Auras" prompt, consuming the Marker and revealing the nearby Auras of all interactables the Map was in range of, and was able to read, at the time of Marker placement for 8s.
The Killer does not see this Marker.
I would also suggest that all Auras shown by the map are shown to the Survivor in White, and any Auras in range of the Marker ability would be shown with their regular Auras while Channeling. In order to convey to a Survivor what Auras will be added to the Marker if placed.