I'm one of those guys who is intrigued by pin placements, when I play a nice course with tiered greens and see 12-14 in the front and a few scattered it bugs me.
To me 6-6-6 front, middle and back is the right combo. Left, center, and right sides if possible. Combinations are endless.
I'm know it's grunt work and did it for a few weeks, years ago to help out a short staffed crew.