Since it seems they are releasing some Firespray and HWK cars in the "Most Wanted" pack, without those actual ships.... it sets a precedent. They now could in theory, release the Shuttle Tyderium, and some rebel pilots for it in another pack, maybe a "spy" pack, without having to do a whole other shuttle.

S&V falcon anyone?

And yes I would like to see a rebel lamda. maybe they can make an imperial corvette too. I keep remembering somewhere in the x wing rogue squadron books that the imps used a corvette and stealth x wings to hunt down the rogues..