Well I'd rather at least be able to move and regain if i'm just moving from one location to the other killing on the way. Not
Kill stop...Kill-Stop, Kill-stop.
This is especially true for the people who don't have healing spells/healing actions allocated to their action bar/haven't gotten them from their respective classes.

Rest healing is obnoxiously slow in most MMO's. I hope that it doesn't take forever in this now