Leaving PK Subban off the Olympic team was a very real option for Yzerman. Not because of talent. Because of handedness. And PK barely played once he made the team. Because of handedness. It's a big deal.
Of GMs, Yzerman's might well be the biggest proponent of lefties playing the left side, righties playing the right. When Carle returns all the lefty spots will be taken and we still have Barbs and Nesterov. Unless one of those guys moves out, I think chances of us acquiring a lefty are almost zero.
I've gotta agree, the issue can be boiled down to Sustr simply playing over his head right now. If he can be pushed down to 3rd pairing for this season then he's in a spot he can probably handle given his experience. Maybe in time he'll be a top 4
If we don't make a trade then I would expect them to move Garrison back to the right side when everyone is healthy because we aren't gonna go far in the playoffs with Sustr in the top 4. I'd rather have Nesterov/Barberio on the bottom pair than Sustr in the top 4
Hedman-Stralman
Carle-Garrison
Nesterov-Gudas/Sustr
Barberio-Witkowski
So a Dman that can play top 4 minutes on the right side is the most important thing. Then you can push Carle down to make a strong 3rd pairing.
If the Dman is good on the PP it would be even better since we don't have a righty pp option on the point other than Stralman who i'd rather be a 2nd option. Stamkos has been tried there but he should be on the dot