There's a decent chance that never even becomes a top 4 when considering the amount of seasons away and player turnover.
I think at this point Reinbacher doesn't become more than a 2nd pairing dman. The odds are against him now with another major injury missing significant development time at a critical age (see: Conor Timmins).
I think Mailloux will be a solid #3 but he could surprise and be that 'minute-muncher' for the Habs. I'm not convinced any of these guys will turn into a true #1, they have a lot of quantity but lack the high-end quality outside of Hutson. If he could use his skillset to become elite defensively, that would be huge for them. I still would take a few other future D cores over theirs.
I have a high interest in RHD because, well, like everyone, I dreamt about playing it. Closest i came when i played it in beer league.
I loved scouting them in Hamilton, and now, with a huge tv and 4k, I can see what their focusing and responding too.
What I saw from Mailloux is hesitation based on fear of making a mistake. In a game that is measured in instant, reflex response, that hesitation put him a step behind....which at the NHL, it costs.
He desperately needs/needed to play with a defensive defenseman like Guhle to lose that hesitation because his partner can help cover any mistakes. Plus learn from him.
My concern is that with Hutson and Matheson taking priority, the only defensesive partners left are his underdeveloped peers. I love X and Struble, but they aren't Guhle or Savard. That's why I made my previous comments about "stifling" his development.
The hope now is that he develops at a rapid enough pace on his own or an unfortunate injury to Hutson or Matheson. That's where Guhle becomes available for either side support.
Regardless, the "finishing" school is a few NHL seasons. That experience will slow down the game for him and reduce the decision error rates.
He has the huge size and tool belt for a top2 upside. He is not going to walk into that without development time. Unless Guhle shows huge improvement on his offensive side or Reinbacher has a secret, yet to be seen offense, Mailman has the highest
combo of defense and offense. For me, the true definition of a "defenseman".
Let's see....