He's not interested in anything prestigious or noble or respectable.
Fans have to buy both books to get a complete perspective.
Weldon is against simply updating one volume and making readers throw the first volume away. There are thousands upon thousands of films here, many of them rare or lost, with director, screenwriter, and producer information. I find that I reference these books more than just about any other book. The only drawback is that the first book only goes up to 1983 and the second book only goes up to 1994.