The skewb, skewb diamond, and skewb ultimate all represent a bigger challenge then the 2x2 and pyraminx. Is there any specific reason they aren't recognized? I think it would be a good move for the WCA to at least open up to the Skewb, since it is one of the more popular twisties. I understand why the missing link isn't recognized, but I'd like to bring it to your attention that that is also a very popular puzzle. While my main concern is the skewb, I would love to see the link recognized as well.