When you visit a teammate's island you should still have access to the chat. This would be very helpful to instruct teammates in building placement strategies. Things that I see alot are 1) failure to clear all rocks and rubble, 2)lack of boosts (often accompanied by a hodgepodge placement of habitats, 3) inefficient use of the smaller islands. This enhancement would allow them closer to real time communication with the mentor having to return to their own island to chat.