What a huge oversight.
Say for example you are setting up a game with your friend and you wish for it to be on the server browser so it can fill up with players.
As soon as atleast two other people 'ready up' in the lobby the game countdown starts and the host can't do anything about it.
So basically if you host a custom lobby and two other people join and they both ready up, they decide when the race starts not the host.
......really?