This is sort of getting off the subject of the original post, but yes, prewiring off of a real wiring schedule will generally give you less headaches than more. It also depends on what type of company you work for. If they tend to have more independent lead installer types, then maybe this method may not be as effective as for companies that rely more on project managers than the installers to run and coordinate their jobs. In general, it is just good practice to have the job complete on paper before actually doing it. Why wouldn't you take the extra step and generate a wiring report while you are laying out the prewire design? Just like rack layouts, don't ever even think about putting it together until you do the drawing. 1 space too short or 1" too deep is not just 1 little problem.