Wotlk Warlock Raid Specs

[Rocknlock]

So I've been messin around on ptr with specs and talent calculators and heres a couple ideas I've come up with for lvl 70 & 80. Tell me what ya thinks.

http://talent.mmo-champion.com/?warlock=050330152200310513350303500000000000000000000000000000135003001302000000000000000
lvl 80 spec with imp: I have no clue on imp's survivability for wotlk instances/raids, but the emp. imp seems like it could be pretty useful and it didn't seem like he was running out of mana quick when I was testing on test dummies on PTR. The last 2 points you can put in as you choose. The 2/2 imp healthstone or 2/2 imp. soul leech (although I don't think we'll have any issues with running out of mana in wotlk raids), or soul link maybe for just added survivability whil farming or whatever.

http://talent.mmo-champion.com/?warlock=050330152200310513350300500000000000000000000000000000115003011350100000000000000
lvl 80 spec with saccing imp: Little change from the other spec but with the DS ability might be a better way to go, won't know till lvl 80.

http://talent.mmo-champion.com/?warlock=050330152200310511350000000000000000000000000000000000115003011350100000000000000
lvl 70 (post 3.0) spec with sac: Again not much difference, except for burning incinerates rather than shadowbolts. Costs less mana, shorter cast times and no shards needed to summon your imp to sac. Also fyi since fel armor has changed to 100 spellpower plus an amount equal to 30% of your spirit, you probably won't gain as much dmg with demonic aegis till ya get some wotlk gear.

http://talent.mmo-champion.com/?warlock=050330152200310512350303500000000000000000000000000000135000000000000000000000000
lvl 70 spec without sac: You can choose to put the last 3 points in fel vitality, but thought it would be more beneficial to the raid to have improved imp. Its a toss up, wether or not giving up demonic sacrific and demonic aegis is worth gaining backdraft (3/3 casting conflag reduces the cast time of your next 3 destro spells by 30% for 15 secs), empowered imp (3/3 increases imp's dmg by 15%, and all imp crits give 100% chance to increase your next spell's crit chance by 20% for 8 secs), and fire and brimstone (5/5 increases immolate  dmg by 15% of your spellpower, and the crit chance of conflagerate is increase by 25% if the immolate has 5 or fewer seconds left on the target). I think we'll be critting a lot more as well with the raid-wide buffs (totem of wrath is spellpower and crit chance now, as well as a ele sham debuff I think I read about that gives 3% added crit for a certain amount of time, etc). So it may not hurt to lose some spell dmg.

EDIT: found a spot for chaos bolt even though its still kind of a "meh" ability for 51 pointer. You can squeeze it in after using conflagerate if you're spec'd for backdraft, so it reduces the cast time of it, and the cd will be done by the time you repeat the rotation.