It seems pretty good as it is right now. I also am glad the losing team is no longer calculated with the winning team.
IMO the winning team shouldn't get valor, there's no need to reward them more than for winning the round.
It was ridiculous before the valor change recently, both my brother and myself remarked how we are never losing money any more, when in the past we had slowly lost money over a period of time. If you didn't go full retard and you are a decently skilled player, you could get valor most rounds you put forth the effort. Now it seems to be more in line with what valor should mean.