That would be a cool idea. Completely random observation, but it reminds me of Perfect Dark, when they had a slowdown mode that turned off when nobody was near you. Of course, the biggest issue right now is lag and slowdown. Anything about simultaneous turns are secondary. I did have a war where the guy attacking me refused to cooperate for taking turns, so it made it play more like an RTS, but I adjusted. Should be fixed, but lag is first.