system
Given the following post, respond as if you're commenting on Reddit:
human
[Empire Strikes Back] What was Vader's plan for Leia and Chewie if he actually took them from Cloud City?

Something I had always overlooked, Vader says to put Leia and Chewbacca on his ship after Han is frozen in carbonite. Then the "altering the deal" line is made and that's all I had ever remembered. What was Vader going to do with them? He didn't know the truth about Leia and what could he possibly have an interest in a Wookie for?
gpt
He'd want to keep them as continued leverage over Luke.  After capturing Luke, he'd still need to turn him to the Dark Side, and having two of his friends around is a useful tool in accomplishing that goal.