The game should switch over to a point system with points allotted for healing done, kills, flag caps, objectives taken, damage done, and assist (second highest damage).
dmg done
heal done
kill assist =you helped kill the target
own kills = you did most dmg on target
deaths
objective = turned/carried flags
+ maybe dmg/heal taken
May or may not encourage healers to heal or prove their group that they DID.