An approximate result for G$1/$G$/1$ queue is

Where Cs$^2$ and Ca$^2$ are the squared coefficients of variation for the service and arrival distributions. A co$-$worker has suggested that parts should be stored in a central warehouse between operations instead of at the next machine on the process plan. In this way, jobs can be dispatched to machines at fixed intervals. This will make Ca$^2=0$ and reduce expected waiting time. What is your response?