They need to add unchained of every dungeon imo, we need more content, any new content, they could easily split up the old world 6mans in terms of new purple loot, 2handed weapons from one, bows/xbows from another same with armor, make people play there alts for stuff they want and thus play more and give funcom more money.
And they can leave most fights the way they are just add a god mode trigger and make the last boss a little harder then normal, take atzels, I have always wanted that zone to be revamped to a much harder version and iron tower as well, both old world dungeons are cool looking and nicely made but they are so easy and the gear is garbage.