whether it be an intentional disconnect or not
I think it is some sort of good idea, but only if you do it intentional.
But it does not really matter if it is intentional, or not.
If you have a ragequitter, he would have to stop that habbit in order to play proper games.
If you had a guy who had infinite "number of games left" due to his connection problems, then he is not welcome as well - since he would destroy the fun for others, no matter it is not intentional.
Now, I am yet to meet a person with such connection problems, so this solution seems acceptable.