I agree with Candice Bergen and Shelley Glover as ones who may get promoted, though both are from Manitoba. I'd prefer to see Glover go into cabinet than Bergen, but either would be better than Toews.
I doubt Joan Crockatt will go into cabinet. Michele Rempell is a far more deserving person for a cabinet post than Crockatt and there can only be so many from Calgary in cabinet. She could get something though.
Eve Adams, Kellie Leitch and Chris Alexander are also good choices. Ontario, particularly the GTA, have a lot of great people who could go into cabinet but sadly your region trumps your résumé. It will also depend on how many people retire.
Steven Blaney I think is someone who could be a good Qubec Lieutenant and Environment Minister.