Steeper punishment for early leavers in comp

So for the past few weeks in comp I seem to get all of the people who love to leave halfway if not sooner into the match. Can we bring down the hammer harder on these people? I can understand a DC here or there. I mean it has happened to me, but I rejoin as soon as I can. I have avoided as many of these people as team mates as I can. It seems like I get stuck with more and more every time though.