I honestly don't know what to think of POJ. I'd like to see him in an elevated role just because I'm having such a difficult time evaluating him.
You clearly see the talents there, his skating is top notch in pretty much all areas and he has shown some nice passing skills as well (both in the offensive zone and on transition). At the same time, he also looks awkward when carrying the puck and often skates himself into undesirable situations with the puck. I noticed that a few times when watching him in person, he can lug the puck but then doesn't really know what to do with it, so he just dumps it into the attacking zone. Which isn't a bad play of course, it's much better to do that than to try and dangle through other teams, but he seems to have a bit of tunnel vision when carrying the puck.
Defensively, he sometimes gets lost but has mostly been solid. I like how he's throwing the body, he has 15 hits in 9 games and I think those hits are actual hits (for as much as he's capable of doing). I think he's also clearly bulkier than Pettersson is at this point, so he has added some size. I don't think he has been pushed around that much this year either, which is a good sign. His only defensive issue deals with positioning, which is another hockey IQ concern.
I just don't know how POJ would look with tougher minutes because "toolsy players with questionable IQ" tend to have very much boom/bust potential. He has the talents to succeed in the role, it's just a question of whether he can actually do it. We won't know until he's actually tried there.