Ok, I think I can handle the Tanking with my Warrior. I'd also recommend a Ranger with Winter and Greater Conflagration and a Fire/Water Ele with AOE and Ward Against Harm. The Monks should also be able to deal with Burning.
I agree that the Guardian looks good. Though there will be a part of me that will miss direct healing. Hopefully there will be enough support options that will allow for the same kind of team effort feel.
I've been rather busy this last week or so. But if anyone wants to have a go at Hell's Precipice I'm generally free late afternoons (PST).