Well, he's young and can play in the same league next year as well... I hope he works on developing his skills during these last junior years and than he can add extra speed and so on.
No matter how he's longer future looks like I do question his eventual participation in this years WJC's. I wouldn't be shocked if he gets the same treatment as, was it Aatu Räty or Lambert? Participating as a double underage prospect but not making it the year after.
I just can't see his role with his current production. Kiiskinen, Halttunen, Rautiainen, Miettinen and probably Uronen go before him as wingers. Both Helenius and Kumpulainen can play at wing as well if depending on how the coach wants it. And yeah, quite frankly he's not better than any of those options right now.
As lower options there are Vesterinen, Nurmi, Sinivuori, Kuusla (injured?), Jansson etc.
Also, last but not least, there are so many decent centers so there is a big possibility that some or one of the centers that are considered as better than Hemming could end up playing on the wing.
Center options are: Helenius, Kumpulainen, I believe Miettinen will play wing, Aatos Koivu, Hynninen, Saarelainen.
After them there is Ruohonen, Leppä and Loponen.
So my bet is that he doesn't make it amongst the top12 actually, not this year.