It is a bit of an odd way to bump your own ideas but who I am I to talk I used to deliberately wear odd socks in the eighties?

Adding a few new skiffs and maybe a second smaller barge would make the party seem more like a decadent joyride (the palace seems to hold a lot of people some of which may not be important enough to travel with Jabba or might want to show off their own ships). Having more people there could crank up the threat when Luke turns on the Jedi charm.

Though as always it would be a lot of work intergrating it into the existing elements in a convincing way.