I'm sure nearly everyone here has experienced the difficulty of managing orbital units in the current build. It can be hard to distinguish them, hard to select them, and hard to get orbital fabbers to build stuff. So here's my idea - add a hotkey to toggle an "orbital focus mode" on and off. While on, the green sphere denoting the orbital layer would become mostly opaque, and you could not select or give orders to ground & air units. This simple change would make finding and ordering your orbital units around MUCH easier.