Everett would be great, just to get another data point of how star players transition from the USNTP to the CHL.
From a few of the data points I could gather, it seems as if scoring pace from the USNTDP translates very well to the CHL, with 0.85X - 1.5X conversion rate for most of the players I've checked out. But most of these guys, while good players, were far from stars (think Hartman, Matteau, Samuelsson, Boucher, etc) or they were defenseman (Seth Jones).
So if he does choose the CHL route, it will be interesting to see where he ends up. Given his season of 48 points in 24 gp, I wouldn't be surprised if he lit up the dub in a similar manner to the way McDavid did the OHL (on a lesser scale). I wouldn't be shocked to see him score 130-145+ points if he plays ~55 games. But the dub is a bit more of a defensive league, so he could end up with closer to 100 points. Anything substantially below 2 ppg would be a bit of a disappointment IMO.