By optimizing your max throughput, you will be able to handle an increased amount of orders with the same number of employees in the same amount of time. The derived effect will quickly show an improved turnover.
Customer satisfaction is key. Increased demands for fast delivery time, high order mix and customization are becoming the new standard. These demands have to be met to keep customers satisfied.
Improving processes by moving orders out of the door faster, reducing the cost-per-pick will most likely improve your competitiveness.