Great post, though I'm unsure whether Blizzard can do much about fixing this problem.
IMO - the bigger problem (that almost all competitive games face BTW) is the fact that a large portion of the playerbase that is playing in competitive should not really be there, they should be in quick play.
Playing "seriously" when you have problem hitting a target that's standing 5 feet from you. Not focusing on objectives but on getting kills. Just being a douche by leaving, feeding or AFKing. - all these sort of people should be in quick play, each of them for different reason.
And sadly no game company can force these players to think about what game mode is the one for them.
Great post! Would you mind if I included it in today's "best of gaming"?
Hmm, I agree with what you've said here. Those are big PRIMARY issues, but still, even making changes like not taking 40pts from a team that lost a player due to AFK would be nice. Keep points for the loss, but maybe less in that situation? I've had so many 5 round 5v6 games (and won a good few).