Yes, Boussh's and Jabba's lines are all subtitled. At the end, you have the "I like Captain Solo where he is" shot, but instead of that the subtitles read "Now I have the complete collection" or something to that effect, then wipe to next scene.

The pacing problem with opening on Yoda's scene is the incredible amount of honestly boring exhibition you get with that scene, which is fine if you're already engaged in the story, but to start it off like that is asking a little much of the audience.

This way, we start off the way the movie has always started (not to mention we keep the Star Destroyer opening, albeit replaced with the Executor), then a scene where stuff actually happens. You're admittedly kind of thrown into it, but that's fine since that's how ANH started. THEN we get to the expositionary Yoda scene, and since it's Luke's first scene, we assume that he's been there for a long time finishing his training.