Don't personally like items like this in game... are they going to have one for every stat?... making build specific items that prop up or boost certain builds over others usually take more away from a game than add to it imo...
I don't care for the existence of this objects. Maybe it is due to my background with the White Wolf rpg's but I'm not so much into this kind of style that relies on being meta. I obviously maximize the preferred stats of a due class but that's all, if a magic artifact comes the way I use it without thinking too much about it (and always trying to be coherent with some role play style that is if i decide my toon has lower Int stat and is happy with that they won't use int increasing objects just like a low charisma one won't use carisma enhancers).