While I do believe Dark Mind is too niche and Living Dead is by far the most inconvenient among "invincibilities", I'm confused when I see people concerned about TBN. It's a rather powerful ability. High damage incoming? Pop TBN, then Edge/Flood. No high damage incoming? Edge/Flood. It's in my opinion one of the best utilities in the entire kit of tanks as both MT and OT, just for how versatile it is and how strong it is when compared to IR/Sheltron/HoS (haven't properly tried HoS yet though). True: the MP gauge is tied to damage, and TBN relies on it despite it doing no damage - but it still gives a free Edge/Food which can be saved for a specific moment (or just blown immediately as I do most of the time). It's just a delayed Edge/Flood. Sure, it doesn't *always* break if things don't go according to keikaku - but I think that it really isn't as bad and it doesn't happen as often as some would paint it. I do feel like I'm doing less damage than other tanks in trials/raid - significantly so - but I don't think this is because of TBN, rather me not optimizing stuff or the kit itself being weaker.

As far as fun is concerned, I can get behind people feeling unsatisfied - mostly with the DPS side of it. It's just a meh combo (not a fan of the animation of Soul Eater) with some oGCD (granted, very flashy ones) and Bloodspiller. I don't like Bloodspiller, it doesn't feel nearly as heavy as other "big" skills and the actual hit is quite delayed from when you press it. Which is why Delirium being an equivalent to Inner Release (other than being also repetitive: 3 out of 4 tanks spamming the same ability really sucks out the identity) really grinds my gears. My pipe dream (if really spamming a same-potency skill ad nauseam is the best DRK can get) would be for Delirium to turn Bloodspiller into one of those buttons which cycle attacks similar to Duties and PvP, skills doing the same potency but with cycling animations. Those animations wouldn't even be new - because they could recycle the old flashy ones they left behind: I personally miss the other two combo finishers (Power Slash and can't remember the other one) and Scourge. So Delirium actually now would drive you into a frenzy which makes you move errantly with extravagant combos - a concept that kind of reminds me of Artorias from Dark Souls. That wouldn't fix the "spam the button" problem unless it changed more buttons (like the actual combo instead of Bloodspiller), but it would certainly change the feeling a little.