Credit the show's producers with allowing snark of this magnitude to be attached to the official product by buying a set. At least they have a sense of humor and an ability to not take themselves too seriously.
However, I think there are a lot of things that make this season worth watching and give the fourth season a fighting chance for being one of the better seasons. First of all, the first half of the season is excellent to watch - the attempts by Sydney to discover what happened to her in the past two years are interesting and well tied together in the resolution to this dilemma in the middle of the season. The second half of the season has its moments as well. The North Korea episode, while not a pivotal episode for the main themes of the show, was well done and intense. There is a glimpse of the humor that gave the show some charm in the first two seasons with the return of Will in one episode, as well as the episode where Vaughn pretends to be Sark. The return of Conrad (the monk in Nepal who originally sent Sloane on the Rambaldi mission) resolves what the documents were that he revealed to Sloane. The final episodes where The Passenger is revealed are also pretty well done, and the finale, while not as mindblowing as previous seasons, leaves the show open for the fourth season. Since the show won't be returning until January 2005, the writers have much more time to concoct a more intricate and satisfying plot.
While this is not the best season, it is interesting, worth-watching, and necessary to enjoy the subsequent seasons of Alias.