Blizzard, in full knowledge that they can't program, set the default countdown timer to 10 seconds. I suspect that they did this to allow everyone to synchronize before starting the game. Mafia modified the timer to 5 seconds. I suspect that increasing this timer will reduce the number of dropped players.
The IH group broke up today after 4 failed launches where we lost 4-5 people between the lobby and game each time.
Please increase the countdown timer to 10 seconds.