I wish that we could had the option to do so, for example: In WoD, when I was tanking Healers and Summoners in another party were doing all the healing/Raises while our healers were hugging the floors most of the run. I would have gladly commend one of them, so did most of my party including the dead-a-lot healers.

After the fight you could see "/a Thanks for the heals team C".