If you give points for people coming out in the middle of a fight, and you get them accordingly, it can be used in the abuse of the system, as it's impossible to track because it won't count as a fight.

And you can't ban players from playing for Elo Hell, since every room is now considered a rating server, and there are newcomers who really can't handle the game yet.

My suggestion is to use a no-play timer for 10 minutes in case a person is out/ping in the last day twice or more.

But no one would bother to impose such restrictions on the game, given that servers are unstable these days.