I just saw this quote from another thread

While not trying to sound like a smart ass, as I know most of you at Riot are incredibly bright people; I can tell you right now without any of the statistics, knowledge, or data that you have, that the main problem with matchmaking at the moment are the leavers.

The leavers ruin the validity of the Matchmaking score because it often gives one team of players a positive ELO gain when they should have lost, or a negative ELO reduction when they should have won. On an occasional basis, this wouldn't affect the system that much, but since it happens all the time, it's going to heavily alter the score and make mid-tier matchmaking a disaster (which we all agree it is).

The reason that mid-tier Matchmaking is most affected is simple: Most players fall into mid-tier, and therefore the biggest percentage of leavers will be plaguing that category. This is why MM so often results in landslides and players going on massive win or lose streaks, because the scores that each player deserves are being heavily altered by an outside influence that Riot is not doing enough to control.

You guys need to do what Heroes of Newerth did from the start, a percentage based leaver system. If a player has left over a certain percentage of their total games (say 10%), they are no longer allowed to play in Normal or Ranked games until they drop below the threshold again. This amazing system has practically eradicated leavers from all HoN games, and I can see no logical reason why you haven't implemented it as well.

If you really want to fix matchmaking, you need to attack the problem at the source.

edit: This thread is a continuation of a thread I made before located here.

Just a screenshot, I'm not calling anyone out...

Habitual leavers (HL) OUGHT to affect matchmaking. HLs affect many people. AFKers during matchmaking are just as bad, especially the ranked games.

How do leavers NOT affect Matchmaking? They cause losses for teams that sometimes would have won, and wins for teams that should have lost. If you think that doesn't have a hugely negative effect on the validity of the MM system, then you are smoking crack.

Minus 1000 ELO (less for normal) for leaving ranked games, enough said. So they all get to play together. Then again, it should only be implemented if there is a crash detection system that prevents you from losing 1000 ELO or less because of a bad game, as well as a certain amount of excusable leaves per day.

There's no way right now to detect AFKers. You can only hope they incriminate themselves by spamming public chat with how bad you are (AFKers can't resist this. It's like cats and catnip.) When you report them, the chat log will get sent with the report. Or so I hear.

Oh, this thread again.

Though OP does have a point, like each of the other million threads about this.

Solution? People with 5%+ leaves get put into a separate matchmaking pool, and are queued with one another only. Simple, easy, effective. You know exactly where you stand, and if you change your baddie ways you have the tools to get back with the normal folk.

Queue times aren't really an issue for most of us. Personally, I'd be willing to take another 60s of queue time to avoid having a leaver in the majority of my games. Hell, I'd probably take another 180s of queue time to avoid wasting 25 minutes because of one leaver.

...what?

Oh, I think I get it. You misclicked the bookmark in your browser. These are the League of Legends forums, not the forums of whatever game it is you're posting about. Easy mistake to make. Confusing for us a minute, because in the context of THIS game, you said something so dumb it was hilarious.

I find this hard to believe. Even back in DotA, there was an easy way to tell each person's Actions Per Minute, and using that determine if someone had been AFK for a certain amount of time.