My feeling is that Flight Sims have tended to concentrate to a far greater extent on the minutae of the aircraft and have forgotten the world around them. Personally (and I know I may be in the minority here) I feel that if more attention in future games should be paid to what is going on on the ground. A world war 2 flight simulator should in an ideal world see something akin to World War 2 going on below him. You don't often see people just wonderng around in Flight Sims yet I am pretty sure this happens in real life as do aircraft taxiing. In war you tend to get ongoing fighting, damaged tanks from each other and a scene more reminiscent of Shogo Total War than most sims! I know that for practical reasons these things are difficult to simulate but I believe that the more immersive a simulator can be in the world around it the more the player is drawn into it. Immersion in games is all important and this is particularly true of flight sims - to look at it another way you won't get people buying your game if your roll rate in an FW190-A3 is ever so slightly better modelled than in Forgotten Battles. You will sell lots if you can make the average worker believe that he realy is about to cover the retreat from Dunkirk or fly observation over the Somme at the end of the first day.