What would the point be? How big maps do you really use? O_O
Here's a point:

5 players would enter a maze at spawn points 1-5. 1-4 would have to maneuver a maze to get to the letter brick (A brick with a letter on it). Once they find out the letter, they have to find there way back to the spawn to use the chat and tell 5 the letter. After 5 has all the letters, he would go to the door and type in the letters (the letter 1 gave being the first typed in and 4 being the last). The door would open, and 5 would hit a switch that would allow 1-5 to leave the maze.
Or you decide that you want a WWII TDM in the Bedroom. You could make chat so that you only can talk to people like 10 bricks away (This includes enemies). So to talk to teammates far away, you would need to go to a "radio station".
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