Under this plan, the top ranked player could only go down and the lowest ranked player could only go up and so on up and down the ranking ladder. The long term implication is that scores would equalize over time.
Beyond that, you are already rewarded for landing your kills by getting more points via the kill modifier than you would for any other outcome.
Forcing the landing scenario would have people running after a single kill. People would be more worried about landing than fighting. As it is, staying in to fight, even with the points penalty of a death, is probably preferable because as long as you keep getting kills your kills per hour improve vs. flying home to land which imposes a kill per hour penalty.
I say no. I think it would be detrimental to the game, creating even more cowerdice than we see now. This would seriously reward cherry-picking and running. No acm would be required, and therefore, no skill.