I agree with 2 of 3 for DE's comments and 1 of 1 for PC!
I am not sure that there will be huge reductions in on site time. There shouldn't be. If a gca is expected to make a course interesting with fewer sand bunkers and less width, then the green contours and surrounds will need more detail.
Fazio has long predicted that courses will continue to get built faster to keep construction costs down. That makes sense and if a gca can compress his visits by seeing more of construction at one time, all will be well. There is a greater chance of mistakes, though.