SMN Rotation/priority question for endgame raids/content

[SeriousxSarcasm]

On most aoe packs, MP is never something you'd run out of, so not taking advantage of the MP reduction on Ruin 3 isn't a loss.
Then on basic potency (between brackets, includes DWT buff): Blizzard 2 = 50 (55) potency per target, Ruin 3 is 200 (220) potency, this means B2 is a better choice in terms of raw potency at 5 targets or more, and equal at 4.

Early deathflare is a thing as well, you want the deathflare to actually hit when most of those mobs are still alive. If 1 mob dies before you use it, your deathflare does 440 less potency (always buffed by DWT after all). Using Ruin 3/blizzard 2 inside DWT instead of outside, doesn't weigh up against that potency loss.

The Blizzard II doesn't really matter to me, I've just never seen someone make it a priority compared to other abilities lol.

The reason I say early deathflare gives me hives is 'cause he mentioned then still needing Ruin III to kill them off. There is also the 10% DPS boost to your spells while under Dreadwyrm (which is not something to sneeze at if you're going the tridisaster/contagion route), why would you Deathflare early instead of taking advantage of Ruin III's potency boost while you still have it? :/ I understand the early part (no one likes to see stacks go to waste), I just don't understand using it so early that you didn't actually kill the things... does that make any sense? Unless I've misinterpreted something somewhere, but I didn't think so. If someone is tridisastering under trance, that's another story, you're still doing lots of extra damage after, but he mentioned he never uses raging or tri unless in emergencies, which makes me believe his only boost is coming from Trance, sooooo. That's why I see it as wasteful.