I think "pretty much rebuilt" is a big stretch but I like the direction.
I'm in the Gudbranson is young, will continue to make improvements to his game, and will ultimately prove to be a very solid 2nd pairing D-man that compliments an offense first guy like Hutton.
Even if Hutton's trajectory slows significantly (hard to believe it won't), he still projects as a good offensive D-man who can at least be a second pairing PP QB and eat minutes. Tanev is Tanev and is still young. Edler will be 33 at the end of his current contract and very likely will have tailed off by then.
top 4 in 3 years
Joulevi Tanev
Hutton Gudbranson
It's very reasonable to anticipate that at least two of Tryamkin, Subban, Stetcher, Pedan, Brisebois, Neill, Olson will develop into solid NHLers.
Larsen, Edler, and Sbisa are the transition guys while we wait for these other guys to develop.
Overall, the D is a little soft (thinking Pedan will turn out to be a 7/8 guy) but it is big, mobile, young with a very good balance of O and D.
A lot would have to go right for the core to be a good as when Bieksa and Hamhuis were in their prime, but it's hard to complain about the direction.