Wait, is there a debate going on regarding whether or not Lundqvist is a great goalie? The Rangers have their flaws, but those are all in front of the crease. The defense is aging and filled with some serious under performers who would be hard to pawn off. They are more or less stuck there unless they have some prospect explode into a top pairing role. The forward group is deep, but lacks elite goal scoring capability. They are basically the St Louis Blues without Vladimir Tarasenko up front.
Some people have been saying Lundqvist is declining because of last year. He's really not, the defense was just horrendous in front of him. A closer look at the stats pretty much bear that out.
As I said I don't really feel like the Rangers defense is aging so much as you just have the two guys making up way too much of the cap and taking up too many minutes. Klein is also over 30 but he plays well and is also moveable I believe. They really just need to find something to do with Girardi...we think McIlrath can probably handle a 2nd pairing role even if there are some growing pains and some searching around can probably result in a decent third pairing guy (maybe Clendening or Paliotta)
If we just pretend Girardi doesn't exist, and nothing else is done, I'd consider running something like this next season
McDonagh - Klein : not ideal with Klein on the top pairing but they do well enough together
Staal - Skjei : Skjei is left handed but has been being groomed to play the right. I'd at least give it a shot and see if he can help Staal's game and Staal has some life left in him to help steady a rookie.
Holden - McIlrath : Holden was overused in Colorado but should be just fine as a 3rd pairing guy and help McIlrath hold down a steady spot on the third pairing. McIlrath can actually move the puck pretty decently but needs more experience and not to have to jump into hard minutes right away.
Clendenning as the 7th
Girardi shot into space
It's not amazing or anything...again I'm not a huge fan of Klein on the top pairing but it's doable enough with McDonagh pulling him up. That defense would probably at least be pretty good, not great, but better.
More realistically we'll probably see Klein traded before Girardi since he has value, and Girardi in the 2nd or 3rd pairing spot, but maybe they get a young righty with potential back
edit: this is all to say, I don't think the Rangers D is as totally effed as some people think, it can be turned around into "decent" pretty quick, and a deep forward group filled with guys like (hopefully) Vesey who can put in 20 goals will make up for a lot of the lack of a real offensive defenseman. Enough for a cup run? Probably not unless Skjei really takes off on the right side along with McIlrath and Staal has a resurgence, but smart moves in the next year or so could make a difference and Lundqvist probably will still be good enough for another run