I've played many sims that are extremely fun that include these gems many include placeable markers for spawn points for friend/foe aircraft with their altitude or set to take off or launch from land/water ways to set destinations for aircraft/tanks including waypoints, circumstances for win/lose, a map of the area faceing top down if you want to get a good idea of what I'm talking about look at the editors from JETFIGHTER V, IL-2, and JANES FIGHTERS ANTHOLOGY
I believe this would greatly come of use for fun, sinerio type role play,Chalenges,
And game development in general so it's a WIN WIN for both the devs and the great community that surrounds this game