I have to agree about Lucas having to put the most effort and commitment into Star Wars Empire and Sith for the reasons said. though he would know he could put out any half-assed attempt and it would make money because its Star Wars, and people will want to see it.

Yeah there such moments in Sith and the prequels in general unlike the Classics(maybe my bias where everything to me is o.k even the Ewoks and Jabba stuff(only would come near), sure the Classics dialouge and acting wasnt shakespeare but it beats the hell out of prequel dialouge and acting) The balcony was a prime example(though topped by the Clones love dialouge) my other cringing moments in Sith the usually good and reliable Ian Mcdiarmid going "No No you must die " or whatever and the generally awful(in the film) Natalie Portman on Mustafar "your breaking my heart" "and "hold me like you did by the Lake on Naboo when there was nothing but our love etc" though I can live with crap acting and dialouge they were cringeworthy, other than that I really do like the film