thanks, but i'd just thinking a simple city, just like pandaman sugested, just for visual efect, and could be just a few of them, like 10 cities on 3 diferent sizes would be cool, the point here should be the runaways, 3 sizes of cities, 3 sizes runaways,, this would not impact optimization too much and could add some more options for contracts and landing places with a refuel system, so we could have simple planes being refueled to a litle more range, this could lead to a balance on planes fuel tanks, they are too eficient rigth now, it is possible to travel around all the planet with the first aircraft i can build on carrer mode with 30 parts, having some runaways around could change the way airplanes are played in this game making it a lot more fun.