In other words, I send out drawings, cut patterns, diskettes with CNC data, and product lists that describe each and every individual component of a project. My guys never see a full set of drawings of a project until they install it. This way there is no confusion about how something must be done. You do it according to the specific drawing or assembly sheet or CNC program or whatever, and you do X amount of them, in this color. When I bid a project I bid it in terms of items or components, never by the foot and so on.
Every project is essentially the same thing, just a different mixture of components.
Some of your people must have the overall picture of the project. I'm in a different scenario, but have the same problem. I'm not nearly as big as you guys sound, but that's the nature of my particular beast, fewer pieces per year, smaller staff, but the work is more labor intensive per piece. What has just begun to work for me is bringing each person up to speed on one element of how I would think on a job. For example, one benchman knows the joinery and glue-up techniques I would use in a given situation.