From what I recall, the unfinished Bounty Hunter arc had Bane and Boba team up to rescue a child kidnapped by Tusken Raiders. Then Bane and Boba later duel over some ethical dilemma, I think Boba was leading a town insurrection for some reason on Tatooine.
Cad Bane’s introduction to TBB was brilliant, with amazing music by Kevin Kiner and a tense shootout scene… but damn, I didn’t know the details of this unfinished arc before but it sounds awesome. It’ll have been said a million times before, but I wish we’d got this.
On the topic, Kevin Kiner took this Cad Bane theme by Takeshi Furukawa (at 0:06 of this video from 'Hostage Crisis) and slowed it down to make the great western music from the latest episode.