And what sense does that make to have gems anyway, if it doesn't involve any fun, creativity or customisation? The WoW is evolving, gems always have to.
Consider hunters gloves. They have a blue socket, with 60 crit socket bonus. Every hunter will place a pure agility gem there, without exception. Why put anything else in the slot? This is just mundane busyjob everybody HAS to do, to get additional 160 agility. "Hey pal, wanna have full potential in those gloves? Pay us then, 150 gold for a gem". How is that remotely fun? You got your item <WEEEEE> but you have to gem it now <AWWWW>.
Elements like that should be removed. Same with hit/exp haste and no-brainer enchants. They just don't make you have any more fun, just make you do another mundane, boring thing every time you do something awesome - get an item.