Here's my problem with making legendary weapons from year one obsolete. People that don't have the first two expansions will have to buy them in order to play TTK. So they will purchase the first two expansions just to get obsolete weapons. Sure they'll get the raid, but the rewards will be useless, so they are spending more money then the rest of us just so they can get year two weapons. That's a terrible deal. Why should someone buy something they can't use, just to be able to buy something else they can use?