I think Laine scores around 42 - 44 goals and with about 30 assists- total of 74 points, or thereabouts.
How much he can "improve" will depend on him, and how hard he works to improve his physical conditioning. I saw good bursts of speed from him last year, however they were few and far between. He just doesn't have the endurance and stamina to do it regularly. He's carrying to much weight right now.
If he loses about 12 -14 lbs of fat and muscle, and really works on his explosiveness in his first 2-3 steps, and also significantly improves his stamina--we could see a highly improved Laine--who would score around 48-50 gioals with 35 assists-total of 85 points. You also have to factor in his age and his natural strength will keep developing and improving right up until 26-28 years old.
I think if he's dedicated and "really works hard" in the off season, like a guy like Scheif does--that would be ideal. With that said--I'm expecting to see Laine "moderately" improve over last year -- and score around 75 points-- but this is really all up to him, and if he dedicates himself and really puts in the off season work--we'll see a very improved player-who's capable of scoring 90 plus points.