The R2 crew card looks like it could be interesting with Chewie.
R2 reads:
"Rebel Only.
At the end of the End phase, if you have no shields, you may recover 1 shield and roll 1 attack die. On a Hit result, randomly flip 1 of your facedown Damage cards faceup and resolve it."
I could be wrong, but this means you must have at least 1 face down damage card to use R2's ability right? As such since chewie flips crits face down when he takes them and has a high hull rating this sets you up to get a lot of mileage out of R2 before the Falcon pops.
Adding C-3PO can further add to the defensive build by ensuring every defense roll gets at least 1 evade by guessing zero.
What do you guys think?