I think a Dynamic Campaign is extremely importan to the singleplayer aspect of a flight sim. Lo-Mac was my first "real" flight sim, and although I thought that the graphics were incredible, and the FM very good, I still felt that the game was extremely lacking in singleplayer, I found the missions boring, with little to none replayability. Then I tried Falcon 4 AF, and MAN! I was blew away by the complexity, both of the gameplay and the campaign. In F4 it really feels like you're not alone, because of all the other flights that are fighting the war with you, but in Lo-Mac it was always a limited number of aircrafts, in a confined space. I play F4 MUCH more than Lo-Mac, because it feels much more real, and is much more immersive, and I think a lot of that is because of the Dynamic Campaign