..update. and the answer is. Definitely not worth the time for the legendary, definitely not worth the time for experience. Only if youre interested in obtaining the T1 gear for nostalgic reasons...

I do need to go back to outlands and get anohter piece of Quest gear and see if I immediately replace it. I seem to recall when BC first came out, I replaced my T2 gear straight away with a green from killing a hellfire boar.