To improve upon document control, you have to evaluate what you are currently doing. Is the reason because you are using paper files? You can switch to an electronic database using fancy software which also has the capability to print out the file when needed. Is the reason the workload? You would have to expand your quality department to compensate for the workload presented. Maybe you have a less than ideal process. You would have to re-evaluate what you are currently doing and find ways to improve your process.