Agree with this. Good chance he's a great third line centre, with a reasonable chance he can slide up as a second line centre in the Eriksson Ek / Danault / Zacha / Coyle mould at times. Either way, the kind of guy who helps a middle six line on a good team. A lot of the public sphere scouts who lean towards smaller scorers (eg. Wheeler, the EP crowd) have been lower on Edstrom, but those like Pronman that draw upon NHL sources are higher and talk about second line upside, especially after a late season rise last year, which has carried over into a very good season on a very good SHL team. How you classify the upside is a bit a matter of semantics and deployment, but the bottom line is he has the upside to be a needle moving centre in the NHL, though understandably not with the upside of a guy like Hertl, which is why it hurts for many I'm sure.
Personally, I've watched Edstrom closely since late last year and like him a lot. He's not a typical centre in that he's not a great transporter, but he does play strong in the middle, comes back very well down low, and very good on face-offs. Quick thinking as said above, can play with skilled wingers and has good awareness around the net. Doesn't distribute with a lot of creativity but makes quick plays, and tracks the play well offensively. The Eriksson Ek comparison is often out there (though Eriksson Ek is meaner) and the trajectories line up very well, though few expected Eriksson Ek to push towards a point per game at his peak. But that shows how far playing quick, heavy and smart can go with the right level of skill.