Basically this is the most annoying situation ever. You sit in ranked queue for 10 min to find out that the other person queued is afk. I think that you should get 20 prowess for joining and waiting around. Not Elo (obviously that would be easy to farm.) but 20 prowess is the same as a victory so its basically worth going into real fights and winning for elo. What I'm getting at is this isn't better than actually fighting someone but its a good compensation.