I noticed two new rules in the Jabba's Realm expansion:
1. Imperial player cannot have more than 4 agenda cards in his hand.
2. If you have one or more expansions, then you choose half of the deck rather than 6 cards during the rebel upgrade state.
I like both rules as they prevent power creep for the imperial player and gives more options to the rebel players. I will be applying these rules for all future campaigns from here on forward including core set and released expansion boxes.