IMO Kakko is a bit of a early developer sort of story... where he developed his man strength and ability early. It was easy to look at him and say, 'look at what he's doing at 17/18... just imagine as he gets bigger and stronger!' Where the bigger and stronger were already there, and while he's a bit bigger and stronger than he was, in the NHL he just doesn't have that advantage to the same extent. It is similar to those who are deemed great skaters at lower levels... when you get to the NHL the differences shrink and to truly be an elite skater, you have to be just utterly absurd.
If I was advising Kakko, I'd have him trim off 5-10 pounds to try to gain any speed he can, work on his first two steps, and really key in on being a one touch guy/one who gets the puck off his stick within seconds. Make him a more assertive player. Mistakes will follow for a bit, but overall it will quicken his pace and allow him to play with better players at those higher paces. When that settles, then he can bring back in the possession qualities to his game.
For years, Finns were producing elite talent after elite talent... that has seemingly went dry though. Not sure what really changed, but the last 4-5 years have felt disappointing for the standard they were setting earlier.
It's a golden generation. Nothing changed. We were lucky to produce so many top producers at the same time.
Variance