Great post... although what I think really need, is defenceman that can do both.
Take the Edmundson-Liljegren pair. You'd have Edmundson who did not have the skill with the puck to make an efficient breakout, and Liljegren who the bigger Boston forwards targetted (and often beat) physically. It's why a guy like Lindholm was so efffective.
Ultimately, the way I see it, McCabe has both of those qualities, along with a nasty tone-setting edge... and a guy like Simon Benoit has his place, but probably not at the same time as Joel Edmundson.
Every defence pair the Leafs iced typically had at least 1 player who handled the puck like a grenade... and in the case of McCabe, I recally quite a few moments where he wasn't able to make a proper and efficient play because he was on the off-side.