So Barron will need to beat out non waiver exempt RD guys like Kovacevic, Lindstrom, and Wiseman if he wants to crack the opening night roster. Savard should be a lock. Also smaller threats that Mailloux or Reinbacher prove ready for the NHL but I doubt that's the plan.
LD looks set with Matheson, Guhle, Harris, and Xhekaj. Struble, Norlinder, and Beaudin will all most likely be back in Laval.
Guessing the team won't carry more than 7 dmen so looks like Barron will be better served by big minutes in Laval to start the year. I'd give him 25 games with the Rocket and all the minutes he can handle. At that point we likely need to make room for him to continue his development in Montreal.