Sluggo, Vader's plan is to get Luke (hopefully before the Emperor).

The Endor trap is key to his plans and the Emperor's, Fett in that very simple subplot is being paid to help Vader in that task.

The same was true when he hired Fett to find the Falcon (he wanted hostages to lure Luke to him).

Fett was paid twice for that job (once by Vader and once by Jabba).

In this storyline he is luring the Rebels into a trap which will also draw Luke to Vader.

Fett will be paid twice for that job (once by Vader and once by the Rebels).

Beyond the difficulty of making the sequence I can't see a problem with that or how it works in a way contrary to how the characters are all known to behave.

It also makes Fett more complicated than just Jabba's bodyguard (which seems to be his primary role thanks to ROTJ in it's current form and ANH:SE).

Fett is a buisnessman, he will take money from whoever will pay him (what happens to them after he has done job is none of his concern).

The scenes in the palace could be done away with but it could be implied that he is there to make the deal with the Rebels or just having a bit of rest after dropping off Han, we don't know what happened between ESB and ROTJ, Fett might have had to have fight his way to get there with other bounty hunters trying to claim Han's bounty (I think George did some comic book game thing along those lines) but in terms of re-introducing the character it does no harm having in the palace for a while.

Opportunities for business certainly hang around Jabba.

shanerjedi said:
I agree about that. In fact, it made him seem weak when he drew his blaster at Boussh when she pulled out that detonator.

The ESB Fett would've iced her on the spot.

Shooting someone holding a grenade is a sure fire way of getting yourself and everyone else in the room blown up.