We've already been doing 2X4 campaigns; having two imperial players works nicely and keeps things moving along at a good pace.
Say what? This sounds like an awesome idea, how do you do it?
It's probably less glamorous than you think. One imperial takes the 'lead', the other simply exists to clean up the board, rules check, make sure heroes are using their abilities correctly, and chime in to make sure the imperial player doesn't forget all tricks once a group is activated. Prior to each odd turn, the imperial players can take a couple of minutes to talk out the game plan but its the primary imperial player who selects activation order of the different groups.
The imperial players will switch back and forth as who is the primary and secondary from mission to mission. So one is in charge and the other is a helper. It's still evolving but its been working for us. It's been a good experience seeing someone else do things a little different and the helper aspect is great for little things like, "Hey, that stormtrooper just shot but they still have two movement points left; don't forget to use them". As the imperial player, there is an awful lot to keep track of and quite often when attacking, a hero is going to do something to interrupt your train of thought. That's where the second imperial player steps in allowing the primary to focus on the current group they're activating.
If you can get a group of six, two imperial players can make a difference. Add or remove other ideas as you see fit.
That's so true that the Imperial is overworked in this game. A little help can mean a lot.
Edited by Boba Rick