Jets never provide a really fun experience unless they are dumbed down, like in the battlefield games; otherwise they are just too fast and freaky for the kind of aircombat most would enjoy.
That's why WW1 air combat stuff is actually *the* most fun for all; because there are only slight differences between planes and on the whole, the experience seems more balanced. But it certainly lacks the "cool" factor that ww2 has (which is why it has a hard time attracting the youth).
Jets - too cool, not enough combat.
Biplanes - not cool enough, too much combat.
