I just don't see FedEx starting from scratch buying other airlines or starting new ones overseas where the climate is unknown. We are a known quantity to the company, and that is bottom line number 1 (reliable). FedEx makes a ton of money, and they are not going to jeaprodize that by getting us all worked up over a few millions dollars in overall costs. If they were to start a war with us I can see pilots becoming very conservative during ocean crossings if something isn't right with a system, etc... Air turn backs would likely get pretty bad, I don't think they are willing to deal with that considering all the $$ they are making. This is a pretty conservative company, they are just trying to get the HKG/CDG domiciles as cheaply as they can for now. Turn it down, and another offer will likely come up.
Be weary of any deal that has a supposed time-line that must be met. If they needed a deal so soon it would be done already. How long would it take to start a whole new entity from scratch or integrate an existing company...way longer than getting us to fly the planes we already have.
Just my $.02