this is an interesting chart and some very nice company for young Hartikainen.
Sustain, IMO, is the biggest question.
In that vein, here is a chart of NHL-bound forwards in the 19-year-old seasons in the Finnish Liga.
The bottom three on this chart were 19-year-old rookies in the Liga. If we compare this to the 18-year-old chart in the previous entry, we see that the players that eventually became impact players took significant steps forward and Hartikainen must do the same. I think that in order for the kid to become a legit impact prospect around these parts, he would have to post a minimum in the range of 20 goals and 38 points -- his line in the sand, so to speak. If, at this time next year, Hartikainen comes with numbers in this range, as Lowetide would say, he becomes a "player of interest", regardless of improvements needed in skating. Everything I have been able to translate using google has him at center and left wing -- he could be the only left wing prospect in the org at this point.
Shiny things to look at: below is some media on Hartikainen. I don't have translations available, but if you have any Finnish contacts that can translate for me, let me know.
A video of Hartikainen reviewing his rookie year with Kalpan
Teemu Hartikainen sets the KalPan rookie record for goals.
A Finnish journalist goes one-on-one with Hartikainen