Legendary weapon idea @blizz devs

so i have an idea that i think would be awesome, what if they made a system that you could get the old content legendarys and then use a item with a quest line that would make them the current ilvl. that would spark some interest in old world content and then also bring back some of the most awesome and iconic weapons of the game. like imagine tanks using thunderfury again or 2hand warriors using sulfuras hand of ragnaros again. MAN IT WOULD BE EPIC COME ON BLIZZ THINK ABOUT THIS IDEA

I would love to use my legendaries but they would have to balance content around things like 3 Rogues with Fangs or Warglaives. Even at a minimal ilvl the procs are ridiculous.