His skating has improved. And all the other check boxes you've listed are correct.
And while he is super smart, winning the Bobby Smith award for scholastic player of the year, I've slightly dropped him a bit from my early season review of him. I wrote this in early December
https://ohlwriters.me/2016/12/11/nicolas-hague-mississauga-steelheads-player-profile/
In a weak draft, 20-30 range for a d-man isn't all that much to write home about, but that's just my opinion. After watching more and more of him since I wrote that, I'm not sure the hockey sense is where it should be at. And I could be wrong, maybe he's adjusting to a bigger role since they moved Sean Day.
As of today, If you held a gun to my head and asked me to pick who among the OHL's draft eligible d-men would go onto have the better NHL career, I would pick this guy
https://ohlwriters.me/2016/12/27/conor-timmins-soo-greyhounds-player-profile/
But predicting a draft, isn't the easiest thing to do. Everyone gets it wrong all the time. Everyone gets drawn towards the towering defenceman who can at least skate decently. I'm just as guilty as the next guy when it comes to that.