I definitely agree about leaving a little mystery, it starts to drag when you can see the numbers behind the gameplay like you're in the Matrix.
I mostly just want to know that everything works. I remember as far back as NHL '13, I think it was, when they were selling +3/5/7 boosts for attributes and it came out that Acceleration was tuned so low that it essentially did nothing. Maybe it was '14, the year of 99 Strength on every build. Right now, for instance, I can play a whole (effective) game with all available points drained out of durability, shot blocking, deking, fighting skill, one shot or the other, etc etc. 80-85 power and accuracy are more than enough, so there's no incentive for me to ever be slow or sacrifice agility. The overarching point is the same as it was back then: experienced players find out what works and what doesn't, and new players have a tremendous disadvantage that they likely won't ever overcome. They'll just stop playing.
And hey, while I'm on my attributes soapbox: everyone should just have 90 faceoffs, it's never made sense to me that I have to sacrifice attribute points to play center, even though that category (save deking) is pretty negligible.