As a player and squad leader the only thing I didn't find particularly fun was the variety of the missions. 412th was sent to the boats three times which were in the same containment area every week. The Axis sank the Ranger, Ranger the Sequel, and the ghost of Ranger.
I thought the match-ups were pretty even, fights happened fairly quickly and was an interesting setup. Perhaps switching the fight up a little more, offering a little more variety would be helpful for playability even if we have to stretch the history a little.