there are a number of factors here.
If we didn't have Schultz, streit, mdz, amac he would make the team.
He's likely the first call up and for sure next year with no Streit and IMO A Mac being a decent LV target.
Best thing we did for Morin was draft two more higher potential D men. Now Morin can slot in eventually second pair and end up being "a number 2 talent" playing in a number 4 role.
Next year MDZ and Schultz will be gone. We'll still have Gudas, Provorov and Gostisbehere as the core of the D. Macdonald and Manning are irrelevant filler, either one can be dealt or sent down to the AHL anytime. If LV were to take either one, it would be a miracle (or require a good incentive we might not like to give up).
Morin, Sanheim and Hagg are all ready for NHL duty. I would start all 3 on the Flyers next year. Let'em play and see what we have. With Myers, Friedman coming within a year or two, and both the Swedes developing well, the D corps is stacked with promising prospects. There is also a guy like Willcox who might end up as a bottom pairing guy someday.
Provorov-Gudas - shut down anyone and give Provy a longer leash.
Morin-Sanheim - almost a full season together in the AHL.
Hagg-Gostisbehere - great chemistry in TCamp 3 on 3 tourneys.
Amac/Manning