Here's my issue with getting excited over a Star Wars trailer. The trailer presents exciting action clips in short bursts. As we found out from the previous episodes, over a full length film, Lucas only knows how to present action sequences in short bursts. The lone exception to this whole thing is the "Pod Race". However, even in that technical "tour de force", he still changes vantage points way too quickly to build true excitement.
Quick action sequences for trailers look great. I'm sure using such techniques for a movie like "Waterworld" could produce similiar results. When viewed in a feature length film, however, quick action sequences don't always produce big bangs.
I'm still a huge Star Wars fan 'cause Lucas got me when I was young. I have huge hopes for Episode III. I also know there's absolutely no way this movie can satisfy everybody. Here's to hoping he makes it as great as it should be...