Theory craft on this comp

Ok, so we're sitting at 1851 atm, and now facing some really good teams. There's one particular makeup that is driving me batty however. Need some advice, because the fights are inconsistent at this point, we either win big or loose big.

BM Hunter/Ele Shaman/Frost Mage/Sub Rogue/Holy Paladin

Basically, it doesn't matter the map, we start in a position so my healer can utilize some kind of LoS. The issue is however, that groundings are gone so fast and then I'm open to all sorts of CC. The team is pretty darn good in that they poly one of my shaman, blind another, intimidate the 3rd, and then go to town either on my main or my healer. I can burn trinkets to get everyone back, but then they'll re cc. Once pain suppression is burned (on either my main or my priest) they basically just go for the next target. It's clear as well that they're calling out in their vent who I'm targetting cause I'm getting LoSed, and I'm generally sitting in a Freeze or Frost Nova 90% of the time so there's little opportunity for me to give chase.

When we have downed a dps (generally the hunter first cause he's the biggest threat to my clothie healer) they all run off and then i'm faced with 2 rezzers. In BEM and Lord this can be troublesome because a well time Freeze with trinkets down, plus a sap or blind on my healer mean we're struggling to stop 2 rezzes, which are generally split.

During the initial barrage, the focus fire is just intense, Bloodlust from the Shaman + Icy Veins from the Mage + Rapid Fire from the Hunter - depending on the timing of the cc we can mass dispel the bloodlust, and I dispel the icy veins asap, but groundings are all but gone with the hunters procs eating them, the water ele, the mage, and the shaman. Which means at this point, with my healer getting kicked by the rogue and dealing with a big red pet on him that he can't fear off, counterspells and earth shocks flying at my clones, I'm in full defensive mode, which sometimes works, but sometimes not.

Add in the fact that we're dealing with viper stings that are being masked by crip poisons and wound poisons, and aimed shot debuffs, it's just hairy and inconsistent. If I can make sure we all live through the first cooldown blowing, then we generally win, but bad crits or well timed earth shocks/counterspells, and it's gg for us.

We've faced similiar setups with a warrior in place of the rogue, or a boomkin in place of the hunter and we can dominate those teams. For some reason, this setup just gives us issues. Advice/Suggestions?