Did you know that in Outland there are animate herbs, hostile creatures which wander around and have to be killed before you can gather them? Even the trees are not chopped down, but hunted. They are immune to nature magic, and so resist the attempts to druids to pacify them. Even shamans must resort the mage-like calls of fire and frost to damage them.
Sounds so much more impressive than: In BC herbalists can pick crap off some mobs.
I know this is about three year old content, but I only thought of it a few months ago when I was talking to a new player. I guess that's still old.