The reason I brought up FFXI because it's similar to what you said. When mages run out of mp to cure they would kneel and hope to god the tanks would last long enough to recover some mp. It's just alittle differnt in this game because you just have to put away your weapon. If the tank is dying you can just cast, versus' getting up then hitting a spell.

As for mp management, when some get owned in the face for spamming cures or DD, hopefully when they get killed they'll learn to slow down.