I found the izanami forge unlock quest to be grindy and frustrating, the only bit I enjoyed barring the initial forge discovery was the platforming section. However the bit I felt most aggrieved by was the lack of checkpoints in the challenging version of The Insight Terminus. As a largely solo player who groups up with clan mates only occasionally the strike took infinitely longer than it should have due to the fact that dying boots you back to orbit. This is yet another example of Black Armory content being gated behind older content quests. This after lots of previously grindy steps such as doing Y1 heroic events etc. Then you have to repeat the entire fiasco on your other two characters.