I know I've only made it to level 20 on my GLA, but that cure, protect, and stoneskin from my CNJ has been so helpful. There has been so many times, where I had to cure myself to stay alive. And it looks like cure keeps aggro too, so I am spamming cure and getting the mobs to stay on me, and that is like all I can do to stay alive sometimes. Is this what people mean by heal tanks?