Some quick thoughts on each prospect,
Hutson - Some will doubt him and soon enough we are going to see what he can do at the pro level. The Habs future badly rests on his ability to be as close as possible to a Adam Fox, if he can then we are in business but until they find someone to replace Markov they will never get anywhere imo.
I think his defense isn't bad it's just that he's limited by his physical shortcomings. He will likely need a Guhle type of partner. I used to think Reinbacher but Guhle is better defensively. With his lack of height, weight, strength, he's likely always going to struggle with the physical aspects of playing defense. He will need to use his smarts to block passing lanes with his stick and positioning but no matter what he's going to need help for sure. That said no one does what he does on offense, no one. Not Hughes, Fox, Buium, I have never seen anyone do what he does as a blueliner so trying to project that is very tough. I won't bet against him.
Mailloux - I have him so high because he could be tall Caufield on the blueline. What does Mailloux do best? Score goals. It's his shot combined with his physical tools, that allow him to be a solid offensive blueliner. It's the lack of IQ and some poor decisions in his own end that will get him into trouble. Much like Hutson he's more of a boom or bust type that will need a Guhle like D partner to help overcome his defensive issues. But it's hard not to get excited when you have a kid that's missed so much development time but showed he could score goals and has the mix of height, reach, skating, mobility, that will help him in the NHL for sure if coaches can live with his mistakes and he can produce enough to do so.
Reinbacher - I didn't want the pick, I didn't like the pick and I thought he had one of the worst D+1's I've ever seen for a Hab 1st rounder but in the end that doesn't matter much as it's all about how much can he progress or not. With his size, skating, mobility, two way game, he's going to be an NHLer at some point, just does too many things well enough, but it's impossible to say how good will he end up.
When I saw Makar's 1st season in the NCAA I thought he was not very impressive at all. Just did not see the hype. He opted to return for his Sophomore season and he has since said that's where things really took off for him. Once you get that confidence and can build off it, no telling where it can lead you. So in 5-10 years if Reinbacher is one of the best D in the NHL, would I be shocked, yes but not totally surprised. Do I think he has that kind of upside, not from what i've seen this year but again that could just have been due to him adjusting to the big leap in size. We'll see what happens but I do not think he is going to be close to a shut down D like some think. His defensive game to me needs a good bit of work but I like how he's aggressive in both ends.
Engstrom - I didn't get to see much of him this year, I saw more of him last year but have always liked what I saw and found him to be more impressive then Reinbacher at last summers camp. To me he does most things really well nothing great. So I suspect he'll be one of those D that can play anywhere in any situation. I don't think the offense is that great but should be good and his defense looks good but he needs to add mass and strength still so we'll see how it goes on the small ice. He's one of the prospects i'm most excited to see next season.
Volokhin - I stink with goalies, Russians certainly seem to be doing a great job with this position though so if I was a betting man I would certainly be looking at Volokhin as he's got the size and seems to move quickly in net but unlike Dobes he doesn't overcommit.
Fowler - Guy just wins. We'll see about the size, if it's an issue or not. Next year should be interesting for him as to me I would say BC likely had the best blueline in the NCAA, at least half of them are gone so how things play out there could be telling. I've heard it said BC is considered to have one of the best goalie coaches in the league.
Beck - In a way he reminds me of Engstrom in that he just seems to do everything well but aside from face-offs I'm not sure he does anything great. Love the release on the shot but it needs more work. To me he's one of the easiest locks to be an NHLer in our system, just a slam dunk he will play in the NHL but how good will he be is the question. I don't expect too much but I really like his game so he could surprise. Hope they don't rush him to the NHL.
Konyushkov - Really liked what I saw from him, he's undersized but reminds me a little of Svboda when he has the puck, really solid offensively. His defense in the KHL is good but if he were say if it were possible to play in the NHL next season, that he would face similar problems that Jordan Harris faces as they have similar body types. But he has 3 years to fill out some and then we'll see. Like Engstrom, Volokhin and Xhekaj, I really am impressed with the scouts finding them and getting them picked, no matter what happens I like the approach here.
Xhekaj - One of the most impressive jumps from Draft to D+1 I have ever seen, he's a beast that plays a nasty power game but has some decent hands, he will score goals in the NHL. He'll be someone you can put on the 2nd PP unit to stand in the crease, he gives goalies fits and it very difficult to move. He's shown good hand to eye to tip pucks and knock in rebounds. I don't know if he'll be a 4th line or in 5 years we look back and say how criminally underrated he was but what I do know is wherever he plays he will be a fan favorite.
Farrell - Injuries didn't help matters but it's clear that this season he just was not quick enough, too small and the strength/skating need more work. But he's so smart, vision, playmaking are elite imo or close to it. Just a question of can he improve on the speed/skating/strength cause players his size just can't be on the slow side in the NHL.
Kapanen - we'll see what happens, the little i've seen I haven't been overly impressed but I liked early on this year that the skating looked improved. He had a rough 1st half and a outstanding 2nd half so we'll see what the SHL brings.
Mesar - I have been hard on him, not a big fan but I do love how he can handle the puck with speed carrying it into the zone and his vision/playmaking like Farrell are elite or close enough. I don't care for the rest of his game but he showed a lot better effort in the playoffs. Next season should be interesting for sure one way or the other for him.
Dobes - Always liked him since I starting watching him in the USHL, such a fun goalie prospect, what a year he had, great to see him turn things around and have a big year after a tough start. Hope they keep working with him and get him to stop overcommitting.
Heineman - I was a lot higher on him but he struggled with consistency and injuries have been an issue. I like his game though, he battles, will take the body, really good speed, decent shot. Having guys like Heineman, Kapanen, Tuch, Beck, Xhekaj, you got what could be several NHL/bubble NHLers over the next two or so years that bring something that the Habs have been lacking.
Tuch - Good size, speed, needs to figure out what he wants to be, as his physical game is inconsistent and he hasn't shown enough offense yet to be more then a bottom liner in the NHL.
Trudeau - Good size, skating, mobility, decent offensive skills but poor decisions in his own end.
Davidson - needs to work on speed/skating but I like his game, works hard, good shot, physical.
Eriksson - Didn't get to see much of him, wasn't overly impressed when I did but looking forward to seeing him in the SHL.
Simoneau - If only he wasn't 5'7 and was quicker/better skater. Love the way he plays, heart and soul type.
Kostenko - Have liked his offensive game, didn't get to see too much of him but someone to keep an eye on imo.
Kidney - Disappointing season, he is easily outmatched physically, just seems to have no strength at all, undersized, not quick either. Thought he should have been in 3R but hopefully he has a big off-season.
Pitlick - I like the speed/skating, think he could end up a bit like Byron but doubtful he would be close to being that good. Has shown decent progress year over year at Minnesota, his coach is Poehling's former coach, likely a top 10 or 15 coach in the league imo.
Rohrer - I thought it was close between him and Guindon, I liked Guindon a little more but he didn't progress and now we'll see with Rohrer who I liked a bit but man is he small.