Dwight - Please build something into the rules that allows a TD to reset house selection status. Got stuck playing Stark in an event yesterday due to the machine selecting it (switch error somewhere). No points were given, but house was locked in. Just happened to me 
In talk with one of the TD’s they mentioned this was why in recent tournaments it was set to force everyone to play as Stark. This is a GREAT tournament game and this possibility seems to be a limiting reason on why it’s not used. Would love to see it used more and I think this could help.