My guess is that to get down to 9 cents CASM is a lot to ask for. It may not seem like much to go from over 12 cents down to 9, but it is a HUGE undertaking. If it's not done the right way, it can do far more harm than good. Anyone remember Ron Allen's infamous 7.5 cents CASM program that nearly destroyed the fabric of Delta?
I would imagine a more realistic goal would be to have their CASM lowered to around 10 cents. That would put them in very good shape to compete.