Yes, my turtle Koopa is still the last line of defence for all things tankable, but seriously... for AoE, Burrow Attack is unbelieveably hax - my lvl 79 worm was taking a good half health off lvl 70 elites in heroic Sethekk Halls; I can't wait to try it on Garr when I next have time.
Plus, it does much more damage than Bad Attitude ever did for crocolisks, although a Thunderstomping slime is another of my favourites... so I won't be releasing Slimer any time soon, either!
(25 stable slots? Yeah, not enough. Really not enough!)