Gudarzz is MIA (seen him stream though ). Regardless, the issues are almost the exact same as before ( nice job Bioware). I don't really play Carnage, and don't want to talk about Rage, because of 2.7...
Annihilation:
I feel there are two things this spec needs to find it's niche. Self healing. This should be the self heals spec. Madness already surpasses our healing by a mile, but we should focus on both raid and self heals. Leave the raid heals as they are, I think it's fine. Maybe 1% - 2% buffed, but no more. Self heals, I feel should be 3%. 3 x 6 = 18% healed over Berzerk, compared to 1 x 6 = 6%. 6% is a joke, really. Really, you could leave the .5% for normal crits, but bump up Berzerk's for burst healing. The other thing I feel would work well would be making Berzerk instantly grant 4 stacks of Annihilator. Cool idea, yeah, but in PvP, it's brutal to keep up. How big a buff is this in PvE? Not sure, but in PvP, it would allow a Marauder to leap in and quickly build Fury and pop Berzerk, but also allow the Marauder to keep the buffs up when there is down time (Pop Berzerk to instantly refill the stacks when the boss becomes "attackable" again. Or you could just buff Annihilation's damage by 200% and make DoTs uncleansable, since you prefer easy methods