I'd rather see lifetime achievements and accomplishments similar to the system from Warhammer Online's "Tome of Knowledge". http://warhammeronline.wikia.com/wiki/Tome_of_Knowledge
They use to have the k/d states back in alpha but removed the death status to be just kills as is now. People where losing games chasing the best k/d and not helping to win the objectives.
People still chase the kill column. If anything removing Deaths makes them even more Kill hungry because it just looks like a pure positive stat now heh.
Win/Loss ratio would be more important, but that depends so much on your team mates. Maybe average XP per match? That would get people on the damn point.