Look at that guy. 1 leaver and he is complaining that he wasted 30 min of his time. Imagine now if 1 guy leaves and all of a sudden 4 people loose Rating.
There would be riots !
People will leave at the same frequency. Because the reasons to leave are 90% of the time naive and justified. Except that now you pushish 4 people even more than you do now with the current LFG system.