Greetings AW,
I have often thought about how awesome it would be to have a map on your second screen, as this would greatly improve flying driving and more as it reduces the need to open the map and "lose" control of your vehicle.
I just found a mod that does just that, http://athenamod.com/ comes with a program and a mod for arma 3 with these you have everything you would see on the ingame map in that program, which you can just place on your second screen.
Would love to see this being allowed on the Ahoyworld servers
Best regards
PsychOrange