Honestly the biggest problem with comps right now is the sheer amount of people who AFK. Sorry, but these people need to start being banned for days at a time. I don't care if you have an emergency, your dog shit on the floor or your mom is yelling at you.
You shouldn't be queuing comps if you don't have the 8 minutes it takes to do the match. And I shouldn't have my small and valuable free time wasted by people online because of this. The amount of matches I have lost solely due to people AFKing between kickoffs alone is frustrating as hell, but nothing is worse than playing a 20 minute game because the enemy gets a goal every 11 seconds.