The points are well made by previous posters.......Once you get past Hughes and Hronek, the rest of the group is 30 or older. It's still very much a 'transitional blueline' for the Canucks.
Obviously they have high hopes for Wilander; and there's a possibility some of their young d-men like D-Petey, McWard, Kudryavtsev, or Mynio could jump into an NHL job after some development time in Abbotsford.
But the hard reality is, the Canucks will still be out scouring the market for d-men, either via trade or free agency for at least the rest of this season, and probably into the next as well.
It's hardly ideal, but price you pay for the almost complete inability of the last regime to find a single credible d-man in the draft--other than Hughes.
Canucks' blueline certainly looks shallow after the Hughes-Hronek pairing, but if you look at the rest of the contenders in the west, we don't stack up too badly against them.
For example, here are the defensive pairing as of now, based on dailyfaceoff.com.
Dallas: Harley-Heiskanen; Lindell-Lyubushkin; Smith-Dumba
Colorado: Toews-Makar; Girard-Manson; Brannstrom-Kylington
Edmonton: Ekholm-Bouchard; Nurse-Emberson; Kuluk-Stecher
Winnipeg: Morrissey-Demelo; Samberg-Pionk; Miller-Stanley
Vegas: Hanifin-Pietrangelo; McNabb-Theodore; Hague-Whitecloud
Vancouver's blueline is very similar to Dallas, Colorado, Edmonton and Winnipeg. They all have an amazing top pairing that feature a top 10 D (Hughes, Heiskanen, Makar, Bouchard and Morrisey). Their 2nd pairing all has one top 4 D (Soucy, Lindell, Girard, Nurse and Pionk) and their partner is a fringe #4 at best. They all have fairly weak or unproven 3rd pairing that you hope will not get lit up.
Vegas' defense is much more balance. They don't have a superstar top 10 D on their top pair, but they arguably has 3 legit top pairing players in Hanifin, Pie and Theodore. I also think they have the best 3rd pairing out of this group as well.
Overall, I don't think Vancouver has a particularly weak blueline comparing to the rest of the contenders in the West. They will all be looking for upgrade(s) throughout the season. The cost is going to be high, getting things done early (like with Zadorov last season) might be a good idea.