I thought this was a great battle. Well thought out, and no bugs that I noticed, although the Escort in Mission four is pretty painful to fight at higher difficulty.
I found this refreshing and fun. It must be kept in mind that this is more training/exercise then battle, but it lets you work on your single fighter tactics.
Gotta say that trying to target a turbolaser, while a capship is jumping around makes for some interesting dodging, but I just don't understand taking a missile armed Assault Gunboat into a dogfight.