My take on the Challenges is that it's a nice little bonus. It was very easy to finish this in the normal course of playing, so getting something for free without having to do anything extra was really nice. And, if people didn't get all of the prizes, it should have been no huge disappointment to them as the prizes were huge or anything. And most of the prizes were in gaining the first half of the points and so, again, most would have been easy to obtain. Additionally, it was nice to get the spell fragments and the Combining Catalysts. Since they have no expiration dates, people don't have to use them right away. All in all, I thought that this was a nice little bonus.