This blows for me.
The vast majority of my paid flights are sub $100 one-way fares from the Bay Area to So Cal, Vegas, AZ.
I earned 218 credits over the last 2 years, sneaking in CP both years.
According to the new system I would have earned 77k points in 2010, leaving me well short of the 110k needed for CP.
The CP was the main reason that Southwest was my preferred carrier.
Time to look elsewhere.