I decided to re-examine Elias Pettersson's performance at the 2017 World Juniors. I came away unimpressed. I will very likely do a scouting package to capture the state of his game as well as highlight some of his deficiencies. I would not consider him a candidate to be selected in the Top 5.
As expected for a player of his weight class, he doesn't engage physically and is knocked off of the puck easily. His first step requires work, as he isn't particularly explosive. In these games, he played wing. Throughout the matches, he tended to wait for an outlet pass and hung up pretty high in his own zone while his team was defending; during board battles, he relied solely on his ability to fish for the puck and kept at least an arm length's distance from the opposing players along the boards. He never pressed up against the opposition or tried to engage with his body.
When he did receive the puck, he demonstrated poise and was able to make skilled passes or make a move with the puck; however, he struggled to maneuver around his opponents as once they pushed against him, he lost his balance. Defensively, he has a tendency to cheat a little bit, and he doesn't use his body to impede the opposition. At this point in time, he is an entirely finesse player. He doesn't possess much balance on his skates.
For example, here he gets thrashed by 6'1'', 172 lbs defenceman Jake Bean.
Here, he takes a tumble against 6'2'', 186 lbs defenceman Noah Juulsen.
Against Team Denmark:
*on the following play, he does not step on any sticks, but instead buckles as he tries to guard the puck.
Here's one example of him fishing and then cheating on the same shift:
There was, however, one display of high-end skill in the game against Team Denmark:
He doesn't have the skating ability to compensate for his lack of strength and balance. He needs to become stronger to play in the NHL.
A few have pegged him as a Top 5 pick. He has excellent skill, but for the reasons that I have given, he will likely find himself being drafted with a late single-digit or early-teen selection. There is some inherent risk to this selection. That said, quite a few of the players in this draft class are risky in different ways.