I would like to suggest a new section in the squad screen that shows me a breakdown of the number of players I have for each postion. This screen would help me in making decisions on which type of players to buy in the transfer market.
As an example, the attached mock-up would show me that I need a player to cover left midfield, and probably a player to cover defensive right midfield.
The colour of the numbers, or the background, could perhaps follow the colouring of a player's condition/morale: 0 = red for danger; 1 = orange for warning; 2 = yellow; 3 = light green; 4 and above = green.