Bern
Let's talk about Winnipeg.
I am goin to go in a different direction than your critics and say I can certainly see the logic of the Rangers trading McDonagh for Trouba. The Rangers may not want to pay McDonagh's next contract and they can control Trouba much easier. Not to mention that lefty/righty thing. Here comes the part where we need to focus though.
Let's work off the assumption that the Rangers won't trade Stepan (rightfully or wrongfully) because they just moved Brassard. I do think there is a chance that they could move him for multiple assets around the deadline of they are scared by his upcoming NTC, so we are going to put a pin in the Stepan talk for now, because while there is logic, the timing isn't right.
Also lets work on the assumption that Buffalo does now want to trade Reinhart. I think this is very safe to say and I don't think anyone will realistically think that Reinhart is available. But this is okay. Why? Because the player that the Rangers need is Trouba, not Reinhart. Let's continue.
So let's say the Rangers move McDonagh for Trouba. This leaves a very big hole at LHD, but fixes things pretty well at RHD. However that being said the Rangers shouldn't necessarily be downgrading on position to upgrade another in a relatively lateral fashion. Therefore what you have would be this.
18-JT
76-8
NH-6/5
This isn't so great but if we look at this and we assume Staal and Girardi are untouchable to move, how do we make this better. Let's stay in Winnipeg. How do we get the Jets to add a month minutes eating LHD to the deal? They happen to have Tobias Enstrom on the roster. How do the Rangers get Enstrom back to keep the defense at a strong level? Well unfortunately you start with McIlrath who is honestly probably not long for the team anyway. Winnipeg is probably a good spot for him and he replaces Trouba on that roster. Now here is where things can get interesting. Do the Rangers move Skjei to get a deal done? Perhaps they do. I don't really want to move Skjei but to get Enstrom and Trouba it makes some sense. This gives the Rangers:
TE-8
18-JT
NH-5
I like this for couple of reasons. Trouba has the best upside in the deal. This is also a realistic way to modernize and retool the defense. Also, Enstrom only has two years left on his deal, which means that you can either let him walk for free cap space (5.75 hit), trade him to recoup assets next season as a rental, or sign him to a deal probably less than you would have paid to keep the incumbents. Also LHD are easier to replace than RHD so the Rangers will be able to find a replacement.
So if you want to keep a balance sheet you have
McDonagh, Skjei, McIlrath (4.7+.925+.8= 6.425)
For
Enstrom & Trouba
(5.75+RFA rights)
Rangers can try to bridge Trouba for a season and then resign him to a cheaper deal than McDonagh's next using the expiring money from Enstrom (resigns at discount, Graves steps in, NYR pick/trade/sign/etc) and Girardi or Staal, if not both with be bought out out/retire by them (more cap space). To finish off the deal, the Rangers can add a forward and Winnipeg can send equivalent assets back too, but that's for another post. Scheifele is obviously untouchable to Winnipeg for an infinite amount of reasons but maybe Rangers can take a chance on an Armia type. Maybe a Lemieux, Petan type. You get the idea. Rangers then continue to use their forward depth to refill some assets but again that's a post for another time. Obviously the Rangers give up a lot but they become a heck of a lot more sustainable from a roster standpoint. Can obviously tweak a bit but that's what's I've got. Hopefully you reply with some restraint and we can pick brains without going too off the wall.