Maybe some with built in upgrades that are "aftermarket". I know thats what the upgrade cards are but it could be "popular" aftermarket stuff that whole squads might have put in for special missions andjust never caught on enough to be mass produced. Could allow for possible ship model variations and dials while still allowing the normal upgrades.

How about some of the ships that are not really fighters? Might be an idea to add in some of those.Even though they may not have much in the way of firepower, they could possibly have a lot of shields, lot of hull points, serve as places for damaged ships to dock and fire from gaining the defense of the ship. If nothing else, something to take up space and hamper enemy movement. Of course, I'm not sure what ones would be available or what there were but I am sure there are some that would fit this bill.

Rebels could use the comics for more content, they do have Sana Starros's Volt Cobra which is some sort of smaller Correllian YT Model Freighter. Then I believe they are going to redo the YT-2400 and add a Sato's Hammer Title card for Mat Marten and his crew. Plus there is always material from their RPG books and adventures.