Multiple display support

Not the easiest request but I am sure that most people who play this game have multiple monitors and it would be nice to be able to have certain informations on the second monitor or extra window.
I am amazed that no simulation game has made used of extra displays until now.
Extra displays can be used to display alerts, statistics and other interesting data that players tend to follow while the game is running.
You would be able to make your main 3D window "clutter free" and leave certain information permanently opened.

I looked online about Multimonitor games and it looks like that may not be possible with this game engine. (Unity 3D)
I did see a post online about someone who attempted to stretch the game in windowed mode across two monitors of the same size and placed a black bar in the center which the game could detect to account for the space between to display screens. Maybe something like that is possible.
There does seem to be an option to add camera views in mulitimonitor mode, but having the Unity 3D 'scene' across multiple moniters will most likely not happen. This means you can view what is on the other camera views, but you can not directly interact with them.

I wonder if adding a subgame that works in the background and talks with the main game would work.
The subgame on another monitor would respond to settings in the main game and allow displaying menus there instead of on the main screen.
Such as leaving the Overlay on all the time on the other screen. And moving the Tutorial tips and Error messages way over there.
Most likely it would only be used for Dialogs that don't need fast update times. The communications channel speed between parent and child programs, might be limited.
Just a thought.
This should work with any game engine that does not currently allow the use of multiple monitors.