Obviously I'm about a year or so late with this thread, but even after playing all of Chapters 1, 2, and 3, I would have to say SF is the most imaginitive and fun areas of GW. It is unlike any other area asthetically, the indoor cavern is amazing (I originally remember having camera problems when playing through certain areas, but I guess that was fixed) and it is challenging without being excessively hard (meaning that you can play through with non-cookie cutter builds, and even heroes/henchies).
The area is so big and well done that it almost makes me wonder if this is similar to the chapter 3 elite area situation, where it was something that probably was supposed to ship in the box, but wasn't done on time. Regardless, I think this area is incredibly fun, and hopefully either chapter 4 or 5 will be wintry/snowy, and have some more indoor areas like the Furnace
