I believe it was during a HeroCon that I chatted up one of the Devs, finding out that they worked on a lot of the maps, especially the cave maps. I commented that so many people gripe about the cave maps, the blue ones in particular but that I rather enjoyed them as they reminded me of Morrowind, which I spent countless hours exploring every nook and cranny. They then said, rather quietly to me "I worked on Morrowind cave maps, but don't tell anybody."