From what I understand, choice is going through a global expansion of the CP program. I think i've read on flyertalk that Europe is up next sometime this summer. I'm guessing the Australia would not be far behind.
Regarding the December situation, though I abhor sudden program changes as well, if a program is being "used' as a mill, I can't really blame them for making a fast change. Im pretty sure they are in business for their staying customers, not to provide a conduit from one program to another for those who rarely if ever stay at a choice hotel.