I don't think Trouba will ever be close to those D-men you mentioned. At best he is a 50 point scorer. Plus he is a bit of a defensive liability. He's not very good getting in front of shots, using his stick to deflect them. I have seen many times this season, forwards shooting right through him, using him as a screen and scoring. He is very good on the boards winning battles, clearing pucks, and other such things, but is not an overall great D-man like those you mentioned.
One of the reasons we are scoring goals this year is due to our blueline getting involved. It has always taken a unit of 5 to play well together. So whether the top lines improve the blueline or visa versa, they both complement each other offensively, and defensively too. And being we have both in spades, (2 top lines and a foward blueline) we are lighting up the board more often than not.
We have two top lines that most teams don't. Strome and Panarin carried us when Zibad was out for a month. And they show no signs of slowing down. Zibad is probably now,.. getting his wind and legs back after being out a month. And he has always played well with Kreids and Buch. But if you were to ask me to choose, Strome's line would be number one. Don't under rate either lines impacts, just because they don't have marquee names.
There was (is?) a reported named Sherry Ross who annually published a book with scouting reports on all players in the NHL. Basically a page per player. It wasn’t bad. Very mainstream.
But the description of Nik Lidstrom sticks out. He is said to be a great No 3 but someone who isn’t special enough to be able to become a top pairing D. And it certainly is a totally fair assumption. He played behind Coffey in Detroit. He was just this really good second pairing D at the age of 25. Like 10 years later he has 7 Norris Trophies.
Scott Neidermayer was also far from being seen as elite when he was 25. He got what 2 of the Norris Ts Lidstrom didn’t get.
From my POV it comes down to this, and a big part of this team’s ability to contend comes down to this, and that is that we must get a top line that can go head to head with the other top lines in the East. And, I don’t think Zibanejad is a good fit at center on a line like that. I love Ziba, so impressed by him in many ways and he seems like a great guy. But the top lines, especially Boston’s line, Tampa’s when they are playing well, Sid and so forth they do a darn darn good job out there.
I think Panarin is a great start to match them, but he needs a center more towards Bergeron, someone really smart that can weigh things up, and that doesn’t travel as much N-S like Ziba does without the ability to make up for it with super good agility.
If we can get that, I think Trouba could excel on defense behind a top line like that.
I like Trouba. His contract isn't very risky. It wasn't a bad trade, even though Pionk is also developing and Heinola looks to have been a worthwhile pick as well. Trouba can still find another gear, but he'll have to in order to be mentioned in the same breath as Lidstrom, Coffey, or Niedermayer, not to mention those like Chara, Leetch, Zubov, MacInnis, Pronger, Stevens etc. Not there yet, and there is at least some basis for some to doubt if he'll get there. Fox and ADA are also legit. This is the cap era, tough choices have to be made. Maybe it won't be Trouba, but it will be someone, and soon.