The other night I told my guildies about a Hunter who used his Gorilladin to tank a Heroic instance. So they were determined to try it themselves in Heroic Mechanar. The group was three hunters and me as feral cat. Monkeyboy tank lasted two shots. Downgrading to Normal Mech we had a little more success when we added a healing Paladin. Not quite the Heroic run we were hoping for, but still good fun and I didn't have to go bear.
With all the new specs and players experimenting with new builds, have you found any non-traditional roles or group compositions since Patch 3.0.2?