Being a fan from Germany myself, ZeN, a SW:R german audio edit would be much appreciated!
The Star Wars version to watch, combined with the dubbing that I could recite backwards in my sleep, even after having seen the OT exclusively in its original language for at least the past 10 years.
The late Heinz Petruo delivered a wonderfully sinister and threatening Darth Vader - on par with, if not even more sinister than the magnificent James Earl Jones himself. At least to a native speaker's german ears. ;-) And Wolfgang Pampel has since then become the voice of Harrison Ford - I can't think of a german SW or Indiana Jones without him.
But (I hope I haven't gotten you wrong there, ZeN) I wouldn't alter Adywan's version and include the docking bay scene with Jabba. It was left out on purpose and in good taste. Maybe, if possible, include it via seamless branching. Otherwise, let it be part of the special features. Just my 2 cents.