I would think if you were restricted to a single spec and wanted to get the maximum amount of AOE DPS potential with a minimum amount of ST DPS loss, you'd use 14/0/57 but not take epidemic, use GoSS instead of GoDD, then shift the two epidemic points into morbidity. Your total loss would be at most 5% death coil damage traded for 10s cooldown off DnD, so if DC/UB was 15% of your DPS, your net loss would be about 0.75% DPS doing this. I believe necrosis comes out to about 1% per point.

ed: Assuming you're DPSing adds with a 15 second or shorter lifespan.

That is something I haven't thought about, knowing me I'd probably forget to return it within the 2 hours. Shouldn't be hard though, I believe there is an Emblem of Frost vendor just to the right as you zone into ICC. Currently, I'm thinking that the sigil competition will go something like this:

Marrowgar: Virulence (Whirlwind phase would probably result in the new sigil being a DPS loss, although it could be a DPS gain depending on how many Whirlwind phases your guild gets)
Deathwhisper: Virulence (unless for some reason your guild has you on Deathwhisper full time)
Gunship: Virulence (Downtime on mobs, or heading over to the other ship)
Saurfag: Hanged Man (Haven't seen a strat yet where you can't be on Saurfang the whole fight)

I'll have to start timing our clears to get an idea of what my options are for the buying and then reselling idea.

Edit: ToC Bosses
Beasts: Virulence (Crash and Burrows would probably result in DPS loss)
Jarraxus: Hanged Man (Should be able to keep it up full time)
Faction Champs: Hanged Man (Should be in range of at least something to hit)
Twins: Hanged Man would be my vote (Stacks would fall off during Vortex, but that is usually only a couple times, so overall I believe that would be a DPS increase)
Anub: Virulence (Although, you could probably make Hanged Man work)

Having an AOE spec and a single target spec is not needed as of yet. Three of the bosses should be single target for us and the gunship is 50/50 on what you will be doing. I would suggest just sticking with a single target spec until the next wing comes out.

Hello all. Two things: First, please excuse this potential re-posting of information; this is news to me so I’ll assume it is news to others as well. I was practicing my AoE rotation (particularly for heroic Anub) on the heroic training dummy in Darnassus and found that my GoDisease did not refresh my diseases on the heroic dummy, but pestilence did spread the diseases to the master’s training dummies nearby. My SCT registered a miss. I have 8.54% melee hit and 13.67% spell hit (including virulence). Basically, what I’m assuming is this:

Pestilence respects the spell hit cap and therefore can miss if you are under the cap. If pestilence hits your target, a second spell hit check occurs for GoDisease, and therefore GoDisease can miss despite pestilence landing.

Here is a fraps showing my pestilence landing but GoDisease missing: Download GoDiseaseMiss.wmv



Secondly, as far as the AoE rotation goes, I’m wondering if it’s worth adding a blood strike in the initial rotation for 5% more disease and DnD damage, like so:
Initial: (BS –) PS – IT – Pest – Blood Tap – DnD – DC – HoW – DC
Note that this segment is longer than the typical 10 seconds because the first rune used is tapped, also, the last DC is probably dependent on latency and haste, with 90ms I barely get it off fast enough; it is therefore probably better placed in the next segment. Also, using BS to start off provides the minor benefit of potentially proccing 2pcT9 for your first DnD.

Furthermore, the current AoE rotation rolls Blood Plague without the additional damage from RoR. For extended periods of AoE (i.e. Anub), it seems like replacing the first Scourge Strike with PS/IT for the benefit of RoR to blood plague may be worthwhile, like this:
BS – PS – IT – Pestilence – Blood Tap – DnD – DC – HoW – (DC) (Taken from above)
PS – IT – BS – BB – SS – DC – (DC)
SS – Pestilence – DnD – DC – HoW
Then continue with the rotation posted on OP.