At this point Blizzard needs to add some content to the game if they plan on competing with Endwalker. I read once that it took them a week to make Molten Core; they should make a new raid to come out around the time of Endwalker and a new 5 player dungeon. Create a timeless isle like zone as well to attract players. At this point, they need something to add on to Korthia if they hope to keep players attention during Endwalker.