Here is my opinion as a tank and DRK main, when big pulls happen I need to keep both Darkside AND Grit active so that means no mana refresh status EVER, and since it virtually impossible for DRK to run out of TP by making their physical AoE attack cost blood gauge instead of TP for some reason which just so happens to restore MP I constantly have to spam Unleash to hold aggro and kill things 1 at a time(maybe the biggest argument that people want DRK to get buffed aside from better mitigation and better DPS because speed runs are a thing but if they happen to make Souleater apply a powerful Bloodbath effect that also increases damage dealt and reduces damage taken it's a step in the right direction) and for me it's safer to do small pulls unless healer asks me to do big pulls and since I have done some runs of Drowned City as NIN where DRK did a lot of big pulls that I couldn't handle and healer kept them alive, so they must have been gear capped...