Not really a suggestion for ESB:R (unless it was an extra and Adywan has enough on his hands as it is) though if Ady likes the idea and can find a way to pull it off ithat wouldn't upset the pacing of the escape it might work in the edit proper.

To justify Lando's cooperation with Vader against Han & Co it might be a shocking addition to the the panic on the streets and corridors of Cloud City if we saw Imperial ships landing and picking off Cloud Cars (maybe even shooting the crowds ala OS Galactica).

It would underline how much Lando had to balance his responsibilities to the citizens under his care against his loyalty to his friends.

A lot of people still think Lando was a coward (Leia certainly gives him a hard time for it) for caving into Vader but if we see some of the consequences of an Imperial take over of the city the audience would get a better idea of what he had to lose.

It would also remind the audience that it wasn't just the Rebels that Imperials were utter gits to.

When we see Cloud City again during the celebrations we would also get more of an impression that their liberation was personal rther than a political abstract notion.