I am a long time Descent player (both Descent 1st and 2nd Edition). My group and I literally have played these games for hundreds if not thousand(s) of hours.
I am almost always the Overlord.
I recently purchased IA, but have not played it as of yet. I am spending a significant amount of time reviewing all of the rules to make sure that I know the game in and out, as I will most likely be the Imperial player.
One question for those of you who have played IA. In Descent, the game is most balanced when played with 4 heroes (a 2 hero game heavily favors the OL, and a 3 hero game heavily favors the heroes).
How does IA play? In other words, is the game at its best playing with 4 rebel heroes?
I am specifically interested in responses as it pertains to the campaign mode, as I believe in Skirmish mode it is more about how you spend your allocated points.