I'm all for cutting Ben's conversation out entirely. I do, however, think Luke needs to be on Dagobah before he's on Tatooine - we need to feel like he's been training there for a long period of time since "Empire" ended. As it is, it feels like he got a couple weeks of training, left like an idiot, then decided he was a Jedi before even seeing Yoda again. It just doesn't feel like he's had enough time to become a Jedi.

And I don't have a problem with introducing Jabba on the Lapti Nek (which SHOULD be replaced with something!)/Boussh sequence. It works well as an introduction in my opinion, and sets a much more sinister tone for the film and for Jabba's lair.