Are there any linked campaigns available? Where your success in one scenario carries over to the next? In the end, you rule all!!!!! I'm playing the Awaken the Bear Campaign, which is great, but no continuity between scenarios....
The DLC "Ghost Divisions" has 2 campaigns of 5 firefights each. Surviving units carry forward and may gain experience. The campaigns are also playable H2H which should make for some cool games.