I've now gotten to the point on my warlock where I can get his set of dailies done in about 2 hours each day, which now leaves me with a little bit of time for leveling other toons.
I'm also starting to see the light at the end of the tunnel on some of the faction dailies. I'm about 3 days away from Revered with Golden Lotus and probably 4 days away on Klaaxi. At that point, since I'll have unlocked the Valor Point gear with both of those factions, I could stop with their dailies and focus on the newly unlocked Shado-Pan and August Celestials. I'll also likely be completely done with Cloud Serpent and maybe Tillers by that point.
If I'm looking at Shado-Pan correctly, it'll take me about 3 weeks to get them to revered. At this point, it's too hard to tell on August Celestials.
So I'm making additional progress on the Death Knight, who is just a few bars from 88 at this point. I'm leveling as blood - after having tried a significant amount of time on both frost and unholy, I've finally stopped fighting the inevitable and just given in to leveling blood. I'm basically an unstoppable unkillable machine. Sort of like a ret pally with swirly bones.
I'm also loving the new level 87 Death Knight ability, Soul Reaper. After getting my diseases started along with a Death Strike to get shields up and heals a goin', when I'm down to one blood rune, I'll usually pop Soul Reaper. And usually by the time it runs it's course, the mob is down below that magic 20%, so it is taking them out with a 60K+ hit, critting for over 120K. It's really a thing of beauty.
It's a different approach to leveling than the warlock, as I can definitely run in and pull a pretty large set of mobs and watch them all fall dead at my feet.
I also went to Kun-Lai right as I hit 87 rather than finishing out Valley of the Four Winds and Krassarang. While the final scene from those two areas is fantastic, the higher xp in Kun Lai is definitely worth the switch. Especially since I've already seen the conclusion there once - if you haven't finished the whole Stoneplow series, I recommend going back and finishing it up. Think Wrathgate.
I've pretty much decided the hunter is going to go next in an attempt to unlock some of the transmutes, followed by the Paladin.