Thanks for the warlock advice! Some of the stuff I had actually figured out for myself before I checked replies here (a lot has changed since the last time I played her, so I'm combatting my own preconceived notions). I looked at the sbolt and incinerate tooltips and figured out that they have the same cast time but sbolt's damage/mana cost was higher. So I swapped from incinerate to sbolt and saw my dps go up considerably. (I also have recount and shadowbolt was definitely better dps--I just wish incinerate was an even choice because well, who doesn't love bubbly fire?).
My rationale for tab-cursing on aoe pulls was that it would give the tank more of a threat lead (since I just pug lfm and don't know if a given pug tank is any good). But I was still using rain of fire, I'll give seed a try instead.
I already had the top tier destro talents and the lifetap glyph. However, I skipped over decimation, I think it's called (the soulfire execute talent), thinking that I would rarely spend enough time using it since things don't spend a lot of time below 20% hp. Turns out I was wrong and I'll fix that. I thought originally that it worked like the mage fire talent where targets below 20% took additional fire damage%. But I see it's more of a buff that activates on me, and can be used on ANY other target (even if it's at 100%). How exciting!
I also read the tooltip for metamorphosis and was delighted to see that I could continue to use my regular warlocky abilities, plus it was a 20% damage increase! So I've macroed it in with blood fury and my trinkets
All in all, I definitely have room to improve. But, after making a few small changes based on common sense and reading of tooltips/recount analysis last night, I saw my dps go from just under tanks to first place in every group, no question. It's pretty nice to do 40% of a group's damage and have the tank or healer ask me to requeue with them (especially when queues are in excess of 20-30 minutes most nights). I'm actually right around 1450 dps at level 74, which is sadly higher than fresh level 80s in most of my healer's heroics... No, I don't understand how it's possible for a level 80 warrior to do 500 dps in a heroic. But I feel good for nearly tripling that number, 6 levels lower
**Bonus kudos to whoever created the mod Powerauras. There's a shoop da whoop icon that I really, really love. I have it set up to notify me when lifetap buff or firestone drops off in combat, and I'm going to set a notification for when decimation procs, as well.