Was it George Lucas who in an interview many years ago said something about how one of the biggest mistakes that directors of fantasy films make is that they spend so much money on sets that they end up spending too much screen time on them because the want to show them off, and it ends up ruining the pace of the film?

I searched on the internet, but I couldn't the exact quote, but I DID find this interesting & revealing Q&A with Dale Pollock (author of "Skywalking"):

http://www.washingtonpost.com/wp-dyn/content/discussion/2005/05/06/DI2005050600821.html