Yeah, I'd say if dps are doing stupid things, let them die a couple times so they get the point. "I do NOT have the mana to waste on you if you're doing stupid things."
Try to use greater heal to top back up the tank if you can instead of flash heal when he's getting low. Shield>Borrowed Time Greater Heal is awesome. It may take a bit longer, but it heals for more and is more efficient.
Kathy, I said, "I'm lost" though I knew she was sleeping
I'm empty and aching and I don't know why
Counting the cars on the New Jersey Turnpike
They've all gone to look for America