Thanks for the post, Irfaanator.
I made a few adjustments to my Reno N'zoth Shadow Priest list like Twilight Drake and Kodo Rider. The former was a big help, the latter didn't get much play time but that was partly because I was playing around Vanish one match and Brawl the other.
I want to use Chillmaw as well, but am still working on a way to fit it in.
Still chumming at rank 17 after losing to a carbon copy of the Token Druid deck. Beat one C'thun Warrior by going Shadow Form and just chipping away at his armor until I MIND VISIONED his C'thun (lol). Took and beat a Mill Rogue to fatigue by chipping at him in Shadow Form and finishing with Blood Mage + Holy Fire.
I took out the ASP and Circle because there just didn't seem to be enough support for them, especially since we're not using Justicar or Flash Heal and will be in Shadow Form a lot. I added a Shadow Madness and Mind Vision to up the number of spells for Yogg.
Prof. Lich, I'll probably give your list a spin after I "grow out" of this Reno, Shadow "phase."
It's too bad they didn't give all 3 Old Gods away for free. It makes me sad that I have to craft N'Zoth AND all of the cards he synergizes with still.
I crafted N'zoth from the remnants of Force of Nature and whatnot and don't regret it for a second. It's probably my most played WotG card (followed by Yogg, Shifting Shade, and Darkshire Alchemist.) The only bummer about Zoth is that Blizzard is going to "tone down" on future Deathrattles because of him. (lame)