Having enjoyed Aces High for years, like you, I agree that the AH client/server does what it does very well. Neither IL2 nor DCS World were designed as a large scale multiplayer environment though. While IL2 is close to Aces High in functionality, DCS isn't. I think DCS could scale as written but for hundreds in the same "arena" I think it would require increased horsepower client side and increased bandwidth to/from the server.