while some consistency and "improvements" might be achieved, I hardly think it would make things easier... It might increase the cost and invoice total but it adds significant steps to the on site printing job.
And of course one could some how capture the images and ouput film in their own lab, but again that significantly complicates a job that should be simple and traditional.
There is no need to dilute (digitize) or overcomplicate a job or the clients life, when the job can be done with traditional photographic methods
Only my thoughs(i don't mean too be harsh)
Corey