Well, I'll weigh in as I've seen all of his games this year, including exhibition. I like the Simmonds comparison from a body type and skating style standpoint. But he definitely doesn't have that sandpaper yet. Keep in mind he's 17 though. Simmonds wasn't exactly a dynamo yet at that point.
Bailey has some slick hands and good offensive instincts. He is excellent at gaining the zone, but has been a bit hesitant to go to the dirty areas so far. Once he does, he'll start getting some of those loose pucks because he has size and quick hands.
He definitely needs to add some upper body strength as you can see him lose his balance too easily when a solid frame collides with him. And for a tall kid, he has trouble along the boards because of that. With time, and some weight room effort, he'll be a force.
I also know it's only a matter of time until someone chimes in to say he needs to keep his head up as he has been rocked a couple times this season while looking at his feet. Again, just rookie adjustments. Not a big deal.
But you can see his confidence starting to come. He even earned a bit of PP time this weekend. He has the size and talent to be a top line player in this league after a year of seasoning. Definitely NHL potential.