I think the vocalizing in the PT made the films try to be too dramatic and it doesn't work. It just made the films come off more pretentious then they already were. The "Dual of Fates" in TPM was kinda cool but after that I thought it became too much with the "Order 66" Jedi execution sequence in ROTS. The films are always trying to hit you over the head with the emotions you should feel in each scene. The music should extenuate the feeling of the scenes instead of constrain it which is the way I felt whenever there was vocalizing in the PT. The OT had very little vocalizing, non in ANH and ESB, and just a little in ROTJ. I think it really works better by just using orchestrated music. I think a little vocalizing used in moderation can enhance the music like in the Terminator 2 score, but we all know how good GL is at using things in moderation.