Wouldn't cast iron be an accessory no different than the vortex, SNS, smokenator, roto, etc? I can say that when I go to other forums and they have a million category or sub categories I get kind of turned off. While it does make it easier for lurkers to find something specific I think it makes it harder for those of us who check the forums several times a day since you would have a lot more clicks to get through all of the new posts.