One of the things Zeke used to talk most about on these boards was how often bottom pairing defensemen would put up good advanced statistics but it wasn't always a good indicator that they could easily move up in the lineup and many times very far from the case.
I was pretty shocked when I looked at the usage of all our players and how Sandin was being sheltered. Lowest Dzone start % on team, highest start shift on the fly % on team and even leading this stat leaguewide. He also had alot of defensive zone giveaways for someone that wasn't spending all that much time actually in that zone.
He's got great offensive skills, thinks the game very well and is suprisingly physical for a smaller player. There are very serious concerns with his ability to defend and I'm not talking about looking at his xGF at the end of the night type of defence. I'm talking when the other team has possession in our end and he needs to do things like clear the front of the net, break up the cycle. win foot races to loose pucks and not turn the puck over under pressure. Whether it was Keefe, Dubas or both combined, they didn't seem that sold on him in regard to that part of the game.
If I had to guess, He will be someone that is close to elite offensively if given the minutes and #1 PP usage but will be someone that could get exposed in the playoffs and against certain opponents or playstyle.