as the subject suggests, the content patch will be coming up soon (next few weeks maybe). Come then we're gonna have to respec.. simply put 0/21/40 won't be as powerfull... 5% less damage from demonic sacrifice and 5% less damage bonus from imp.SB.
my chosen spec to try first is this: 2/3/56 Fire Imp Spec. from what I can tell, the spell rotation is fairly complex as this spec...
1. obviously keep curse and Corruption up.. if going dps curse, CoA > CoD now due to Molton Core proc
2. keep pet in a decent location.. granted from aoe damage all pets take 80% less damage... and imp's mana+health are being seriously buffed as well as mana regen (300% increase I believe)
3. for actual spell rotation.. well the opening rotation is gonna require some testing.. but everything after the first immolate will be fairly routeen. simply use conflagorate at 12.1 seconds, then immolate, chaos bolt, incinerate until next 12.1 seconds (possibly include soulfire in there prior to the incinerate if got enough shards... also depends on dpsc comparison of soulfire and incinerate)
4. for the opening rotation... it's either like 3.... or it'll be immolate > conflag > immolate > chaos bolt > incinerate due to trying to improve long-run mana efficiency by being inefficient on the first immolate and conflagorate
a few random figures.. incinerate will be a 2second cast instead of 2.25, so with my haste that'll be roughly a 1.7sec cast on bosses and a 1.65 on trash.. so actually haste becomes a bit less beneficial.. 4-5% bonus haste to only get an additional 0.05 cast reduction.
the Backdraft proc to decrease cast-time will bring immolate and chaos bolt to a 1.05 sec cast prior to haste, after my spell haste I go below the 1second GCD so actual figures don't matter. incinerate will go from 2seconds to 1.4, or a 1.19 after my haste. beyond the backdraft proc I can get in another 5 incinerates before I get to almost the 12second mark... now depending on lag etc... I may be beyond 12.1 seconds of immolate (so allowing a conflag) or I may not, so meaning another incinerate before conflag so as to not waste time.. and then the cycle repeats. without any haste I'd get in 1 less incinerate per rotation so 17% is a nice target (15% minimum I believe... can't be bothered to work out the exact cut off point).
another thing... the imp's 100% crit proc.. presuming I have the shards (and the dpsc is better for it), I'll be using soulfire everytime it's up with this proc so as to make the most of it... otherwise it'll be an incinerate or chaos bolt if it procs at the right part of the rotation (doesn't make much difference if I cast immolate or chaos bolt first in the rotation imo)
so yeah, anyone else bored enough to start theorycrafting on specs for wotlk... or has the constant pressing of SB already eaten away at your mind? hehe