I have been thinking about this myself. I have a 4 lock team. ( all 39 atm ) I have a 5th lock who is 66. There have been a few times that I would have owned an entire group of players at a flag if i had a tad bit of healing. I run out of mana and end up dieing, The life drain does not drain back fast enough for life tap+life drain.

I do well well with out healing most the time. Having bandages maxed really helps a lot. But when its a long skirmish against multiple players.. a healer would own! That extra area fear would be sweet!