Such items would have to drop off of very high-end mobs. There actually are items that people can get in the Stalker Realm (dregan's area) that add effects and people complained that only certain people had access to them.

If we made only 2 per hour drop, people would be farming that area like crazy. If the objects are player made, everybody has equal opportunity.

One thing that could be done is for the items have materials that drop from mobs. Then it could be a team effort to create some of the more powerful items. (perhaps the priest salamander could have a chance of dropping some item that lets you make a fire resistant amulet, for example).
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If you say plz because it is shorter than please, then I will say no because it is shorter then yes.