Why are people collectively exiting a match when they're the losing team? To spare their k/d? Because they can't accept they are bad players?
I think they should be punished, by getting some of their experience robbed, or a random item removed, or a handicap in their next match.
Edit: Bungie knows when you've been kicked because of bad internet, otherwise they couldn't tell you so. So that isn't the problem at hand here. And a time penalty isn't a big deal when you have an emergency going on.
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Thing is, before answering this question, Bungie needs to fix matching and lag. As is right now I would vote NO, if team matching would get better and you got paired against people of your same skill, and there were minimal lag problems then YES would be my answer.