My guild managed to go 7/8 in one night last night (we 2-shot H Spine for our 2nd kill) and got in two H Madness pulls. Tonight that's all we'll be doing for about 3 hours. For those of you that have done it, what's the possibility of us getting it down tonight? We managed to get to the third platform on our first pull.
I would say it's possible. I'll post a write up with how we did some of the more difficult things. We killed it on our first night of attempts (4 hours) on the last pull of the night. With the current DS nerfs, the only platform we really struggled with learning the fight was the fourth. When DW's head comes down for phase 2, it's pretty easy as long as you slow bloods and spam AoE on them for Spellweave. We 2 tank, 3 heal it to make it easier since the DS nerfs allow it (and we have some pretty bad players lol).
We do Green, Red, Yellow, Blue and on the fourth platform we put a yellow raid marker (for parasite drop location) against the edge of the platform between the corruption spawn point and the wing/arm thing.
Regarding hemorrhaging bloods, when they spawn whichever tank isn't on the corruption will grab them and hold them to the side, then when the 2nd parasite is dropped into the time swirl, we drag them in and spam AoE for spellweave. Just remember that even classes which normally wouldn't spam an AoE ability probably should because of how powerful spellweave is. I'm a combat rogue but I don't blade flurry for big aoe parts, I just spam FoK. I only blade flurry for blistering tentacles, and terrors on phase 2.
The biggest thing to organize for us was impale soaking.
First platform: our Prot Warrior takes 1st, Blood DK 2nd (both using dream and a minor CD to take it),
Second platform: Blood DK 1st, Prot Warrior 2nd. Both using personal CDs
Third platform: Prot Warrior with a bubble/hand of sacrifice (probably has a personal CD as well) takes the 1st, Blood DK take the 2nd (his own CDs).
Fourth platform: Prot Warrior takes 1st with another bubble/hand of sacrifice (we have a holy pally and a ret pally), I take the second one that lines up with the bolt impact (combat rogue, pop evasion at 10 sec until impale, all melee/tanks run out, cloak the bolt explosion and vanish when impale cast starts), and the Blood DK takes the 3rd with his own CDs (we get 3 since dps is lower without all platform buffs).
On phase 2 with DW's head on the ground, our fire mage hits blast wave as soon as bloods spawn and then I spam FoK on them with crippling poison on my weapon (can also have an assassination rogue with deadly brew talent so they can use a dps poison on their weapon, or chillblains frost dk, frost trap hunter, etc). We kill two sets of tentacles/big adds then pop hero and only pull off the boss if bloods spawn.
edit: just for comparison, it took us 8 or so pulls to get past the 1st platform because our tanks are retarded and kept messing up impales/people standing near the parasite explosion