Ok, so everyone can agree that the so called "Competitive" mode is complete garbage. It's not competitive in any way. It's completely random. Do nothing on a good team that wins and your skill rating goes up. Dominate on a poor team, lose, and your skill rating goes down.
It's completely random and should be called Random Play. And I love how the message pops up when a player on your team quits and it tells you that after the timer runs out, you can leave and will receive a loss but won't receive a penalty. Well, when you lose, your rating goes down. So how is that not a penalty?
So what are the reasons for playing competitive mode? Yup, there are none.