Congrats to McDaid!! Unfortunately this takes him off the field but I have no doubt he will prove to be succesful in his next venture. I also love Steve Shaw as the new National Coordinator of Officials, he did a fantastic job as the head of SEC Officials.
As for who replaces McDaid as a new White Hat it will probably be one of the current CJ's. Chris Snead, Jason McArthur, Kevin Boitmann and Ted Pitts all have White Hat experience in Group of 5 Conferences.