Please address my entire post...
I think Boqvist is better than Hughes, adressing Hughes main qualities, mainly vision, skating and stick handling, those are all elite for him, well, I believe that Boqvist has similar skills to that, on top of one of the best shot in hockey. His wrister and his ability to pick corners is just uncontested as a Dman since the last few drafts, something that Hughes just doesn't possess as a player. There's also the fact that Boqvist plays a NHL type of offense, he pushes the play up, like Karlsson, and then looks to either distribute the puck to walk the line or just step up and score a goal himself from anywhere on the ice. Hughes has great lateral offense, he's similar to Barzal in the way he creates his offense, unfortunately, Barzal is the only one I can think of that plays in a similar way at a high level.
I had Kotkaniemi at 4 and Tkachuck at 9, there's a significant gap to me.
Same with Boqvist, had him at 3rd overall and Hughes was 7th.
Realistic upside for Tkachuck would put him as a 2nd liner, don't think he should be much higher than that.