r.i.p. alleria. 1997-2017. blizzard ruined alleria forever. blizz assassinated alleria's character and appearance.
i will never forgive you for this blizzard.
Hell no. It should be extended to the entire game, and more old zones should be made relevant through it once more. There are so many zones in this game just sitting empty apart from levelers going through. Hell, some zones are skipped entirely by levelers through dungeon spamming.
Even with the scaling, I feel that gaining levels and reaching a goal (max level) is plenty rewarding. Mobs becoming greyed out never was my main motivation while leveling characters...