If the CV was making that much of a profit, there would be upgrades done to it, but also consider this...the ONLY reason the Panther Platform makes money is that all the tooling etc has been long paid for (much like the Ranger) and spending a couple billion dollars on a new platform or making whole sale changes to it would destroy that profit. The only reason the Ranger is getting redesigned is that the platform will be used around the world, spreading the costs out. The Panther doesn't have that option.
Its more or less your damned if you and damned if you don't.
Another reason for Mullay's comments come from Ford being far too dependent on F-series and Explorer sales like they where in the past and the excuse of Small cars can't make a profit in USA thats been prepertated by Detroit since Small Cars have came out. All platforms have to carry their weight and make money. The days of designing a car to sell 400K units a year then cheapening them up/rental fleeting them out to make the numbers are done for. They have to figure out to make $$$ on a platform that sells about 100-200K units a year...which leads us back to the Panther, which would be lucky to do those numbers on a new plaform. The Taurus gets a pass since its platform is shared with the MKS, Flex and the '11 Explorer, which puts the total D4 platform close to 300K or more units a year.