In light of the sale, I checked my bookings and found some oddities, but nothing in my favor. Points bookings I made are showing higher points fares now, despite showing the same cash price. But not enough to be a different factor (70/72/74...), just off slightly, by less than a dollar in points. An example:
LAS-OAK RT
$101 out, $56 return
Base fare = $119.40
Booked at 5806 + 2792 = 8598
Now showing 5832 + 2808 = 8640
42 point difference
Southwest's booking system remains full of mystery.