Leader/Deity drops

I think it would be interesting if each named leader/deity had an item (or set of items) that had a very rare chance to drop, and only existed if you fought that particular leader/deity. This would make fighting them much more alluring. At the present, it's easier for me to farm 5 or so levels above me, and get the same exp, than to fight a leader.

Some leaders are much easier than others Ive found. I don't like idea of item sets in particular, but if gear they dropped added their name to it....id love that.