More Odin style FATES or the World Boss FATEs in HW are but make them more viable with the rewards they drop. As it stands now defeat them once or twice and done. Have a drop similar to the Hunt Bloodstained logs that a player may receive that is relevant and useful or at east sought after. We simply will not have XI style NM's but we do have a basis for NM types just make them repeatable. That HUNTs are still popular today shows that we are interested in this type of play SE just needs to build on the concept.