if I were to put together what i'd change it's mainly AI improvements. Shots being taken when they have open chances instead of sitting in front of the goalie and skating away. using momentum when skating around the end boards instead of turning around, bringing all players into the play so Offense and Defense play on the same side of the blue line.
Some things I'd add: More play stoppage within a period. Goalie freezing the puck and offsides. both are relatively simple to deal with and would add Faceoffs on both the onside circles and Neutral corners or just going back to Center Ice and using the onside circles.
The only other thing is more QOL and it's auto subbing for players marked out on a play stoppage or being able to sub in just the forwards or just the defenders. at least allow me to sub in players before a faceoff like the AI opponent does
Long winded gameplay review over.
Make the AI Slightly Smarter
Goalies should be able to freeze play and offsides should maybe be added in
Allow Subs to be brought in during play stoppage before the next faceoff
Something else minor but please add more cards with art of the players in uniform on the ice. I love the action shot cards and would love more of that kind of thing in game.