Gorton would be smart to play things close to the vest.
For example if I'm Vancouver I might have Boqvist, Hughes and Dobson pretty much even and I might be thinking of taking Hughes anyway but if I know the Rangers really want Boqvist at 7 I try to get another 1st and pick my guy at 9.....and if Boqvist and Hughes more than less turn out even or my guy turns out better then I'm also one 1st draft pick ahead. When you're talking about relatively even players best not to give away a preference and get exploited by another team.
Boqvist 'could' become another Erik Karlsson but he might not. Hughes is a better all around player right now. IMO they both should become 1st pairing D. Boqvist has a higher ceiling but Hughes has a higher floor. He's a safer pick and could easily turn out as good or better in the long run. I would not trade an extra 1st or 2nd to move up to grab Boqvist. I would probably do it to move up to get Zadina though.