Poor skating is absolutely a red flag and I would not have Tkachuk in my top 10. At this point in a player's career, you can't fix someone's skating.
If you aren't a great skater, you have to be absolutely elite at pretty much everything else.
Well I will say skating can be worked on especially at this level. These NHL tams have excellent trainers and skating coaches they employ, the Canucks alone have turned both Virtanen and Boeser around from being below average skaters to good skaters..it is IMO one of the most teachable skills you can work with. Not every player will see success as it depends on the level and style of skating a player is at, but remember with Boeser why he went as low as he did - skating??? Now his skating is above average as he worked on it all summer....also remember Jason Robertson from last year's draft who is one of the best goal scorers for his age in the world but dropped to 39 to Dallas...well guess what? His skating has improved as well, and now Dallas likely landed a Gold mind in the kid...
As Blue Liner said, I really do not see any skating issues with Tkachuk at all. He does and will do just fine in that regards. He is a 6'3 power forward that isn't going to be blasting up and down the ice...not his game or his role. The kid is strong as an ox on his skates, so hard to knock off the puck...his stats are absolutely misleading just like Casey Mittelstadt who surprise surprise just put up a near ppg since he made the show...Tkachuk isn't Mittelstadt in pure skill, but he will produce here, don't make the mistake others did with Boeser, Robertson, etc..
I picked Bouchard at #7 because I feel for his position he is simply near elite in so many areas. Very hard to pass up on him. But if he is gone and Tkachuk is (unlikely) still there, you run up to the podium as quick as you can and announce his name.