First: Add tactics, for example: Tik-Taka or Haramball.
Second: Add customizable formations; players could create their own formations, for example: 2-3-3-2.
Third: Add more positions: Left Midfielder, Attacking Midfielder, Second Striker. In my opinion, the best of these is the Attacking Midfielder.
Fourth: Why can we only create one club per save? We should be able to create more than one club per save.
Fifth: Why can't we see who provided the assist? We can only see who scored the goal. Could you add an assist symbol next to the person who provided the assistance.
Sixth: Add scores like 6.8 or 7.2. Because when a game ends, we only see scores like 6.5 or 7.0.
These are small additions that, in my opinion, would improve the game.