My roflkins are lvl 38 at the moment... but they pwn in PvP and PvE.

In PvE it's just starfire spam. I have a mass heal button that puts 5 regrowth + 5 renew on the druid that has aggro, so no need for tank at all. 5 DPs so far, not that you need a tank for pre WOLK instances.

In PvP I do mainly AB runs. My favorite spots are stealthed in a bush at max range from the flag oneshoting everyone... or just run to enemy flag and insect swarm + moonfire everyone and watch them die while I cap their flag.

Also I never run stuck with no mana. Just shapeshift to cat form and mew mew pew pew. Found that a bear tank + 4 cats can down usually ?? level mobs without much problems as long as I shapeshift and heal-hot the bear druid every 30 seconds.
In pvp it's even better.

Yesterday in AB I just had my big LOL moment with round robin tranquility becoming virtually immortal for almost a minute.