Slushpool needs to consider implementing lightning payouts to attract more users, especially those running S9 machines who are currently turning them off due to the lengthy on-chain withdrawal process. By adopting lightning payouts, Slushpool would not only tap into a substantial amount of hash power from unplugged S9s but also fulfill its original mission as a pool for the plebs. It's not too late for Slushpool to become a pool for the people again and increase the frequency of payments, especially considering the affordable infrastructure options available for lightning payouts.