Now, if a manager sets a lineup with three or more blank starter positions, the coach will declare the lineup invalid and make up a new lineup using a fuller roster.
I am not sure if I understand the news correctly, but will setting only 3 starters and blank elsewhere balance the minutes of the players? I am currently training players so I do not want to try.
I have no intention of trying it, ever :) If I understand correctly it's like this:
If you set three starters or more, they will stay in their assigned position. There shouldn't be much substitutions during the game, players should usually play in same position throughout the match(unlike BL/LCD).
If you set two starters or less, coach simply ignores it, and sets the lineup, as if the lineup was blank.