Ball control skills are the foundation of the pyramid of player development.
These instructional articles will give you some answers.
The Coerver Method has a pyramidal structure with individual ball mastery skills at the base.
A good balance is important because when one priority doesn’t get the attention it requires it can lead to stress that has a big influence on performances elsewhere.
Every movement we do with our limbs requires a complex cooperation between our central nervous system and our muscles.
Learning new moves requires a complex cooperation between the central nervous system and the motor-units in the muscles it controls. The player initially has to focus really hard on the correct execution but even then making mistakes is very common.
After repeatedly failed attempts, frustration start to surface.
There are more advantages to gain doing ball control drills than just boosting the ball coordination skills.