At the moment you're practically free to leave/disconnect at 0:00 as previous discussions on the subject have resulted in absolutely jack shit.
But consider this: YOU disconnected. You ruined the game for 9 other people, wasting their time because now they had to find a new game, statwhore for 10 minutes, etc etc. Why is it "emo" for a host to ban you for this? You ruined their game, whether it was intentional or not. You have a responsibility for your own connection/computer. Why should the host make a banrequest for you? YOU should at least go through the trouble of making an unbanrequest for yourself, since you ruined these people's game.
The mod's workload wont change. They either have to process your unbanrequest or the host's banrequest. I think both options would result in the same amount of work.
Why let the host do extra work for your fail? The least you can do to make it up to these people is write your own banrequest.