These airlines are just going to keep hopscotching one another with the devaluations.
Next will be AA requiring annual spend for status (like DL and UA) or crimping the value of e-VIPs. Next will be UA again. DL is already pretty crappy with the Skymiles, but they will think of something. Then back to WN.
Couple more rounds and the WN CP will be gone, as will I, if not before that. I give it 18 months.