It's probably way too optimistic to hope they take a page from Blizzards book and change things so that any % based stat (mitigation, acc, evade etc) be based upon your characters level and not necessarily the amount of any given stat.
It's already done this way. It's just that the level is not moving right now. But you'll notice it pre-50. Your -0.10s amount of spell speed is not the same at lv 10 and lv 50. Your VIT gives more HP at lv 50 too (about 8 HP at lv 10 and 14.5 at 50).