Call Of Duty Modern Warfare 2 Host System

i for one am tired of hosts ending games on call of duty 4 and call of duty world at war. i understand that people have lifes that have to attend to. but i would like if Infinity Ward would look at Halo's host system and some how implant something similiar to that in Call Of Duty Modern Warfare 2. For those who dont know how halos host system works. when the host leaves a game it pauses the game and searchs for a new host, then the game is restarted where it was left off with the new host.