After being thoroughly pissed off and let down by the total piece of garbage that is IL2/Pacific Fighters, I'd had this idea:
What about Aces High as a standalone, offline sim? It could be a pretty natural progression from Combat Tour (which as I understand, is going to have many of the features of an offline boxed sim, anyway). Not only that, but then the team wouldn't have to worry about the restrictions of limited bandwidth and lag, and could do a lot more graphically and with the flight and damage models.