Personally for me i would play PLY on a regular basis if it werent for the fact that you get destroyed with late hits every damn time you play the puck to your teammates.This more often than not leads to having to play 10 min of each and every period totally drained of endurance, ruining your skaters ability to compete.
In a world where you dont end up getting penalized for late hits, the PWF is king. Rendering the lightweights useless unfortunately.
It's pretty sad now when i think about it, That the gameplay mechanics forces you to play with pwfs if you want to be able to keep up (READ: dish out as much poise/endurance drain as you are recieving) with the opposition.