Every character in TESO can use every item dropped as loot so there is no way to limit loot rolls to only players who would use it. You can't praise a class design system that allows complete freedom to select what weapons and armor a player want to use and then complain about a loot system that supports that freedom of choice.
With that said, I would support a future enhancement that adds a minimum skill rank in order to equip a piece of equipment of blue quality or higher. For example, all blue + VR ranked gear would require level 45+ skill in order to equip.