Greedo needs to be paired with someone. Let's pair him with Zuckuss.
Jango and Zam, but that's been established. Jango and Aurra can work as well. Zam and Aurra can also work as well.
Then Boba and Dengar and IG-88 and 4-LOM, only because they're both Droids.
Bossk can be paired with whatever Bounty Hunter gets "dumped" first.
Those are my pairings. Most are unlikely or will never work out, but this is just for fun right?
"Did I ever tell you how much I like ants huh? Especially fried in a subtle blend of mech fluid and grated gears?"
-Rampage, Beast Wars