I feel this should be "opt-in" at the event level for those events that do not wish to be part of the SCS.
To say it is opt-in at the player level is not accurate, because players in their first tournament aren't asked to join WPPR. Players in their first 2018 tournament are unlikely to be asked if they want to continue and pay the fee.
As @haugstrup stated, I don't see how this fits with IFPA's goals. The state and national events already have prestige and publicity, and players who do not have a chance to reach the SCS are going to be actively hurt by this.
Locations running 20-player weekly events will be asked to pay $1000 to support tournaments they don't run where only elite players are welcome, or else leave the WPPR system altogether.
Agreed, and thanks to all who have done legwork at IFPA. This is their call to make, and thanks to them for the system they've built and organized.