I tend to agree. Spooking, useful as it may be, is boring. Really boring. You're basically asking someone to sit around in an asset that's somewhat unimpressive against most ground targets and wait until an aero shows up, not so he can actually kill it, but so that he can shoot at it until it gets annoyed and goes away for awhile. Meanwhile, he can shoot at ground units, but really if that was what he wanted to do he'd be better off in something that isn't AA. It's a thoroughly thankless job, and it becomes all the more thankless when the aero pilots catch on and just stop taking aero until he gets bored stiff and stops doing it, at which point they can take aero again.