Skating is an issue but he has shown that he can already produce playing with men. Also, skating can actually be fixed. I feel he has a higher chance of success in the NHL than Hughes or Edvinsson.
This is something that I strongly feel to be a huge misconception that is often reiterated on these boards.
Through my experiences in life, i have come to believe the two things that are extremely hard to coach in hockey with noticeable improvements are skating and awareness (hockey IQ).
Power skating drills work to increase the energy in each stride to some extent, and strength and conditioning coaches work with certain players to try to improve their skating, but the improvements are not massive. Conditioning allows for players to maintain their top speeds for longer shifts, but power skating drills and coaching don't usually re-write technique in established players.
While it may not seem so, a large portion of skating speed relies heavily on fast-twitch muscles. You can't really coach that.
A players skating technique is the other portion, and it is developed over years of skating. Players balance points and equilibrium are ingrained in their muscle memory. To try to ask a player to completely change their skating form would almost be akin to asking an established quarterback or pitcher to throw and pitch with their off hand. Stickhandling, passing, and even defensive stickwork all put the body in specific balance positions that players learn over years of playing and the muscle memory is part of their game. (remember, most of these prospects have been skating for 14-15+ years.)
We hear about coaching staffs working with professional skating coaches and assume it is easy to fix, but if you think about it, how many times have bad skaters in the league actually become good skaters after the clubs add the routine during the offseason. Guys improve, and I have witnessed some decent improvements first hand in much younger players, but I can say without hesitation that I have never seen a drafted prospect with poor skating become a good skater with the help of NHL strength and conditioning coaches.
This is just my opinion and experience, so take it with a grain of salt