My mate and I were getting a group together for Botanica yesterday (a few, actually, but that's beside the point). We ended up with two Rogues and had a spot left for a healer, with me being the tank. One of the Rogues sent me a tell and quite an interesting conversation ensued...
Him: I got us a mage for CC. Invite Frostmage.
Me: A pair of saps aren't enough CC?*
Him: Can't sap in combat, duh.
Me: And your point is?
Him: You can't tell me shit's not going to happen, because it will. A mage can polymorph adds.
Me: Or we could just not pull adds, or I could just tank the adds.
Me: You know, I could kick one of the rogues and invite the mage...but chances are, it won't be Otherrogue.
Him: Whatever, have fun wiping. *quits group*
Me: *Invites mage he named*
Him (not knowing what I did): That is...if you can get a group.
Me: Had quite a few, actually.
Him: What? Wipes
Me: Groups, and not all of them had CC. Just came from one with no CC whatsoever. Was the smoothest run I've had.
Him: Calling you an idiot would be an insult to stupid people.
Me: Have a nice day!
*You are being ignored*
I then found a healer that I had grouped with before and only wiped on a couple bad trash pulls, particularly the ones with the gene-splicers. After that run, I found another one that started with me DPSing (we found a Prot Warrior) and ended with me tanking because the Warrior had to leave.
The moral of this story: don't tell this Druid tank that there's not enough CC. Also, don't mess in the affairs of dragons, because you will get eaten, as we are not patient creatures when you cross us.
*I've been through the instance with and with out CC and although CC is useful, it's not mandatory. In fact, I had just been in a group with two Shamans and three Druids (did the same with Sethekk Halls, too).