Heres my Prot. Pally and Boomkin builds. I'll only be running 1 shaman in my main group (pally+boomkin+shammy+H.Priest+Frost Mage) so I'll spec into Wrath.
Shaman: Since it will be a mixed team, having insta wolf wouldnt be beneficial. Totems I'll most likely be using are Wrath, Mana Spring, Stoneskin & Grounding Totem.
Boomkin: I don't think I'll be having much (if any) periodic dmg in my shot rotation so I didnt go for Genesis, N. Spelndor or insect swarm, instead I went with better mana management cos they way everyone is making it sound (no downranking and %based mana usage) mana might be an issue. I dont use E.Roots and only my pally gets Thorns and he allready does alot of reflective dps so I didnt need Brambles. Instead I went into the resto tree for a bit more spell damage and even more mana management.
Pally: Didnt go for Devine Guardian since using devine shield drops my agro which I dont want. Instead I went more into the Ret tree getting Benediction since avengers shield will be insta cast that puts almost all (if not all) prot pally moves as insta casts and if mana is gonna be an issues 10% less on shields (holy avenger etc), judgement, seals and so forth should help. Went ahead with Crusade, more dps=more threat. I ended up with 1 floating point on Tier2 in Ret so I just threw it in imp judgment.
If the whole no downranking and % based mana usage doesnt turn out to be a big mana issue then I'll probably respec.
Edit: Linked to correct Wrath build (inc imp guardian totems).