This is NOT based on any rumor/leak/psychic foresight/etc. I just got to thinking about the two-ship packs, and realized that a perfect one to do in the future could be Imperial Reinforcements, featuring two Gunboats painted in red livery, or maybe one red, one blue! (For those of you who haven't played the PC games, in TIE Fighter, when you called for reinforcements, most of the early missions sent two Gunboats to assist you.)
This got me thinking, what craft would be good candidates for Rebel/Scum Reinforcement sets, and what sorts of upgrades/pilots/etc. could be made in each?