What if there were a spec that allowed you to be online without anyone knowing? If you had hired it, or have it available for hire, the game could ask you if you want to use it before allowing you in and "breaking the seal" of not being online, which is sometimes an important aspect. Allows for a yet to be determined amount of time of play that does not affect the "last seen" feature. I am not smart enough to determine how much time would be appropriate. Four hours? Less? Could be great for baiting launches and coordinating shit.
I bring this up, because I am in a game where me not being present is important for diplomatic reasons, although difficult when you look at the strategic side of things. I need to plan shit with my fellow turtle, although need to keep the aggressors believing that I want a peace deal, THOUGH am "asleep," thus delaying their attacks. Very complicated to explain, really.