I think an ensemble film with the group of ESB bounty hunters film would be a great idea. Something set 3 to 5 years prior to ANH. They could be brought together for a mission at the behest of Vader. ESB shows Vader has an affinity for utilizing this form of hired guns despite the long reach of the Empire's hold on the galaxy. Also, Pietts insistence that "We don't need their scum" shows a divergence in philosophy between Vader and the Empire. It would be fun to explore Vaders willingness to utilize the Bounty Hunters rather than the Empire. Maybe this would be an opportunity to explore the "No disentigrations" comment.