There is a issue about threat. Skill descriptions are "placing yourself at the top of their threat list.". but while I use these skills half of the time it doesn't work, it doesn't range issue. I always use it in melee range but it didn't work. because this bug, our team getting hard times in dungeons, especially Hardcore dungeons and trials.
I may have some advice on this. Many games add duration to such abilities. E.g ; The enemies you use this ability have to attack only you for 10 seconds.
there is a well-known issue. I wrote this long time ago but didn't any little improvement done.
Not only enforced threat, also anvil of doom, wow of emnity(paladin), smite(paladin). all "puts top of threat list" skills. Its not depends on enemies, I try all types enemies and same bug happens. and is there some enemies have threat/aggro resistance? are you really do that? it doesn't make sense.
for example; light phase mobs after 1st boss in vault of stars, 2nd and 3rd bosses in vault of stars, dragon in Crown of Keldegonn ( this bug much common in this), orcus in tomb of the nine gods, and more.