I was just contemplating the comment that parking by a field with a CV can make upping from said field quite a chore due to the puffy ack, giving the CV's uppers a serious advantage, etc.
If bases/towns flashing is supposed to represent the entire network of eyes on the sky and ground, it'd seem to me that someone might take notice of another country's fleet hanging out off the coast of one of your bases. For gameplay reasons, it should probably be a bit shorter range than the aircraft, but it does seem to me that a half-dozen LARGE BOATS incoming should make the network take notice.
Wiley.