I'm thinking something like open with DoT > Edge > New Spell > Edge > New spell > Edge > New spell > Delirium > Bloodspillerx3 > Edge > New Spell > Blood Weapon > Main combo > Edge > New Spell > Main combo > DoT > Dark Arts for new spell x3
That's a lot of things so it's still busy but it's not white noise, the bulk of the damage (which even with a new spell should still be Bloodspiller since you don't want the new spell so potent it's worth running out of Darkside for) still fits in the 15s party burst window, and still has room for your other oGCD's because remember, spells are not effected by Skill Speed. That's why my proposed solution had it as a spell, it's more forgiving for latency. You do still want to consume as much mana as you can to line up with party burst buffs but once the burst phase is over you'd still find consistent use in your spell since it's independent of any self buffs for damage, meaning consistent damage output regardless of what your raid is doing. You'd keep MP for TBN and be rewarded with a free Edge to get more Darkside time which lets you use the new spell as a reward for a well timed TBN. If my quick napkin math is right, you would get 2 uses of the new spell for every 3 uses of Edge if the values were as I suggested.
Also, refresh my memory, the 58 quest is the moogles, isn't it? I'd flavor it that in order to not be consumed by the abyss that Fray talks about, you have to relinquish some of your "dark side" in the form of a potent attack. Being consumed by your dark side is a bad thing, overcapping on your darkside is a bad thing, etc. which seems like something they can teach. Also a decent fit for the level 50 reward as well, but obviously that would replace Living Dead as the 50 capstone which wouldn't be a good idea, so I definitely agree.
