It would be handy if as a Developer option, a tick box or similar could be added somewhere on main screen or somewhere, where for this map a “Combat” or “Training” switch could be made, whereby cones, balloons could be removed for the whole map, or reinstated.
Training keeps them where they are, and should the flyer wish, he/she can practice proper avoidance and routing.
Combat removes them, (rightly so!), and routings and low level runs can be used as would be.