Peronsally, I don't care if rewards will got to live or not. However, I no longer play new WoW, and if rewards from old WoW can be transferred to new WoW, perhaps it could give me small wish to check new WoW.
One of things I liked about old WoW is that it gave you a feeling that eventually you could complete it all! Sadly it wasn't true when they started removing things on left and right, starting from old ZA bear (which gave you a sense of urgency), then Naxx recipes, then Naxx achiev proto-drakes... That's when Classic WoW started dying and died entirely when Cata destroyed old world, all its quests, etc., making game totally non-completeable in its wholeness.