Choosing Pins is probably the least understood and under-estimated process in course set-up by golfers.
It is a multi-dimensional linear programming challenge, mixed with art.
Architects do a great job of providing options, but the method and order of utilising these is a fascinating challenge
Inputs: Standard of field, receptiveness of surface, trajectory of approach, walk-off locations (traffic matters pre-cut), high points (in case for wet days), low/sheltered points (in case for windy days), wind direction, size of field, disease, no. of days (for tournaments), no. of practice days, variety (Back/Middle/Front), variety (Left/Centre/Right), variety of difficulty (Sunday pins are not all the hardest pins), speed of green, grain, & more...
It is simply the most satisfying challenge to get right...but one gets so quickly pilloried if you get it wrong.