I imagine a good majority posting in this thread are going ampless, straight to FOH monitoring via IEMs. Maybe it's a live broadcast, maybe it's being recorded. What I see represented on many of these boards is a foundation of pedals that cover the most basic of functions: preamp, EQ, compression and DI to sculpt the sound to their liking for their in-ears. Sometimes just a DI will suffice, other times further EQ helps you sculpt your tone, and compression can help you sit in the mix a little better, not to mention a little overdrive.
I feel many of these pedalboards are based on what we miss out on when going ampless, or vice versa, many of these qualities are exactly what we love about our favorite amps and cabs.
We go through a similar process in the studio, the boxes are just bigger.
As for all the other effects, time based, modulation, etc...if the musical context calls for it, the effect could be exactly what's needed given that P&W is a broad genre.