Way to "report" resigners or afk'ers

I feel like because of the amount of people resigning a game in the beginning because of unfavorable circumstances or just not responding for 48 hours, there should be a way to "report" players who do this, or have an automatic system which does that.
I understand that in ranked, if you play enough there won't be any quitters because of the ranking needed, but in casual games it is common. (I will play the game a bit more before getting L2
)
Keeping in mind that we don't want to lose players for quitting, so the punishment can't be too severe. Thoughts on this?
I understand that in ranked, if you play enough there won't be any quitters because of the ranking needed, but in casual games it is common. (I will play the game a bit more before getting L2

Keeping in mind that we don't want to lose players for quitting, so the punishment can't be too severe. Thoughts on this?