I was perusing another thread and read many posts that said you should definitely play with only four Rebel figures, otherwise the game would be greatly unbalanced. How is it unbalanced?
My experience was different. My group played through the core box, Twin Shadows, and are down to the last two missions in Hoth. The two players on the Rebel side opted to play only two heroes throughout.
Missions from the core box swung in the Rebels' favor 7-5. I think Twin Shadows was an even split. Hoth is currently swinging toward the Imperials 6-3. Although each mission in Hoth was close, I decided to leave out elite units during the last one to help out the Rebels. I suspect I (the Imperial player) did better because the Rebel players ignored the banes (I found the one that gave me an extra influence after each mission especially powerful) plus they banked their experience to get the more powerful abilities for their figures first (Diala and Gaarkan).
My friends opted for only two figures because they didn't want to deal with the hassle of managing two characters and all the bonus cards that come along with them. I suspect for inexperienced gamers this is a common fear. Honestly, I felt like it worked out fine. In smash and grab missions the Rebels seem favored since they use their two activations to reach the objectives quickly. Missions that are more of a slugfest seem to favor the Imperials because of the crush of numbers. Nevertheless, I never experienced a mission that was hopeless for either side.
I guess what I'm really looking for is input from people that have experience playing through the campaign with different numbers of heroes. How did your experiences differ with different numbers of heroes on the board?