Do you think he have a chance to translate that in the nhl or you think he have big areas where he needs to improve?
How is his character? Strong or soft?
Joshua Roy's game is built on good offensive reads, trying to put the puck in high danger areas (sometimes forcing the play and causing turnovers), and using high-end skill/passing/shooting to score points.
Roy is stupendously good on the power play at the junior level, where he has more time and space to operate and pick apart defenses with his high skill, sweet lobbed passes and pretty good shot.
That said, Roy's 5-on-5 game, skating and defense need quite a lot of work before they're NHL-worthy, so even though his offensive potential is through the roof, his bust potential is also similarly high.
And to better answer your question, no, I do not think Roy is anywhere close to being NHL-ready. If he progresses fast through the ranks, I think he will need a year of CHL play and a half-season of AHL at the earliest before he's truly ready to step onto NHL ice. If he isn't especially fast, it could take him another two, maybe three years before he's ready for the Show.
Simply put, a lot of the dekes, cross-ice passes, and plays Roy regularly attempts (and succeeds at) in juniors will be plain unavailable in the NHL, and so Roy will not only need to learn how to adjust his game to contend with big-league defenses, but he'll also need to continue honing his skating ability if he wants to be able to get any chances at all offensively dodging the bigger, faster, and stronger defensemen of the majors.
Now, as far as mindset and character go, I'd say Joshua Roy definitely improved a ton there over the last season as opposed to his draft year. And from the interviews he's given he seems to be quite mature and level-headed for his age, which could bode well for his progression.
But at this point of his career Joshua Roy is still far from a finished product on the mental side of the game and will need to pay his dues, get tempered by time and adversity, before he's a hardened pro.
So yeah, Joshua Roy is an exciting prospect, but we should be patient with him and not already annoint him as our "next savior" lest we fall into yet another "expectations trap" that will see a good chunk of our more fickle-minded fans (which there is a lot of amongst our fanbase) turn on Roy if he is not an offensive dynamo from the get-go in the NHL.