Lando, ST Han (& reg han), and 88 double dip as scoundrels and rebels/droid. Boba fett is just useful no matter what.
Chewie is meh, (though I use him myself). Bane sucks, ignore, Greedo is even worse. Dengar is great raid material, so I'd recommend him for sure.
GG, ST Han, and Chewie might make for an interesting (albeit slooowww) offense - they could all taunt dance around most enemies while lando rains hell! But you could never use them on defence, the AI would have them all taunt at once, negating the point of the trio entirely.