I feel like Pettersson is an example of a fairly similar pick to a guy like Mynio is a lot of ways though.
A guy with a frame, responsible defensive instincts, and some projectable tools, but pretty pedestrian production in a junior league. It's about that idea of growing into themselves and becoming a different player. Pettersson has done that to become a very promising depth D prospect.
Guys like Jayden Perron are generally speaking, a lot closer to, "they are what they are" sort of finished products. It may be "swinging for the fences" in the sense that you're hoping for improvement or growth that is extremely unlikely...and every once in a blue moon, that actually pans out. But it's like swinging at a heater of a pitch hoping to hit it out of the park. More often...you're going to completely whiff and it's the guys like Pettersson or Mynio who have a huge amount of potential development "headroom" that end up surprising and turning into viable NHLers.
Frankly...the odds don't exactly favour any of these guys turning into really good long-term NHLers. But Pettersson's development is tracking like a guy who could actually have a solid contributing career as an NHL depth defenceman. Little scoring guys like Perron or defensively, Jordan Subban are always lauded by fans 'round here as a pick. But the vast majority of them never amount to anything. They only really have utility if they end up being a huge "hit". Whereas guys like Pettersson, or potentially Mynio...have some utility even if they just end up being a useful depth player.
While it is true that the chances of finding a successful, long-term NHL player in the 3rd round are relatively slim, I still believe there are some prospects who are better bets than others.
Admittedly, I haven't had the opportunity to watch Mynio play firsthand, so my assessment of his potential is based on the opinions of other posters. Their evaluations have been quite diverse, ranging from criticizing his size, below-average skating, and lack of skill to praising him as the "best" player during the Memorial Cup final.
Regarding the comparison between EP2 and Mynio, I have to respectfully disagree with your statement. EP2 may have had terrible production in the SHL, but his junior stats were promising, showing notable potential (14 GP, 5 G, 10 A). His scouting report also highlighted his projectible frame, strong skating, and shooting abilities, which were well-validated by his highlight clips. On the other hand, Mynio seems to lack all the aforementioned qualities EP2 possessed.
As for Jayden Perron, I disagree with your assessment. While it is true that there are many small scoring forwards in junior hockey that don't become anything, again a certain type of small players are better bets. I was very impressed with Perron's high hockey IQ and smarts which he displayed all over the ice (not just when he possessed puck). You mentioned that Perron is "sort of finished product", and I partially agree since I dare to say his hockey sense seems almost NHL-ready. With the right development, gaining strength and further refining his skating and shooting skills, I believe Perron's chances of becoming an impactful NHL player are far greater than those of an average 3rd round selection or many other small scoring forwards in junior hockey.
