I took Kikidas into a few heroics yesterday (Thank you, Boon!) and watched as her DPS on bosses climbed from approximately 1400 to about 1800 as I got an upgrade here or there.
Granted, as a mostly affliction warlock, my overall DPS still needs some help... but my DPS on bosses was actually pretty nice. I find myself all nostalgic about the good old days.
My rotation on trash is to slap Corr/CoA on them all and then SB spam until I need to reapply.
My rotation on bosses is currently UA, Corr, CoA, SL, SB until I need to reapply. I think this needs working on. I have improved SB, so I may try to hit SB first to apply the debuff before I apply the others. And with the loss of SL coming soon, I will soon be able to start SB spam far sooner. I think I need to go back to the training dummy and smack it around a bit until I'm sure I have the best rotation I can get out of my hybridized spec.
One of the things I took OUT of my talent build was Dark Pact. I love it and I miss it, but with a pet that sometimes winds up dying in boss AoE/Splash damage, I can't rely on it.
So I'm having to be more conscientious of my mana bar than I have been in the past, in terms of when it's safe to life tap and when I may need to drain life or if the healer has the time to spare to catch me up.
Either way, having fun! And.. given that my guild seems to have way too many melee DPS and no ranged DPS, hopefully in a bit I can be an alternative DPS for when we just can't swing another melee'er into the group.