Back to the thread topic:

Some of us still aren't going to pay for Pre when we regularly fly in and out of airports/terminals where Pre is never offered (many smaller airports) or where Pre isn't reliably offered - variable hours or hours that don't coincide with flight times.

If your home airport does not offer Pre, then the value of your Pre membership has just been halved.

The product has to be consistent and reliable for more people for it to reach the enrollment TSA wants.