The way I see it:
Hedman - ?
Sergachev - Stralman
Coburn - Girardi
We still plan on letting the bottom pairing walk but we would still need to replace them. In Hoses scenario or mine, we still need within 11 months, to find two defenseman to bring back or hope two rookies come up. Or FA/trade. The top 4 is the issue. Serg being younger and just as mobile cpuld take his preferred (and the organizations) side. Stralman on the right. Instead we insert McDonagh and put Serg on his off side. Not to mention, McDonagh is inserted until he's 37. Finding a legitimate top 4 RHD by moving Johnson would be ideal. This was the entire concern i had when we were rumored to be in on him. I think McDonagh is a good player, not a knock on him, but adding a left defenseman was always gonna cause this issue. Adding a RHD would have solved this. Everybody mentions Faulk. Faulk is probably one of the best fits we could obtain at the price of starting with Johnson. Sure that hurts but it fills a gap. Faulk probably won't be getting more than this McD contract either so you'd have around a 7x7, RHD with Serg playing top 4 on the left. 3 years younger than McD and has hit 15, 16 and 17 goal seasons. Put that on a PP unit and next to Hedman and it would probably be amazing.