Ghostcrawler on the Jewelcrafting Nerf and Design

The Jewelcrafting nerf has been the subject of a lot of hot debate and flaming on the official forums, as might be expected. As people argue whether the nerf was justified, needed, too much, too little, or the wrong way to go about it, the blues have dipped their toes into the pool more than once, and have delivered some interesting insights into the design process in the process.

If it was so overpowered, complain some, why did it take so long to nerf it? Ghostcrawler answers in this post.