I like the "no FF number" idea.
They only pay for coach. Most of the flying will be domestic U.S. and Mexico, with an NZ trip every now and then.
Bottom line, I will likely not work for them if they don't make an exception.
AFAIK, loyalty programs (mine being UA MP, AA, HH, and SPG) are created for individuals - so the question of "how do they expect to transfer the points" helps to make my case.
I'm wondering if this is SOP in NZ? Most all consultants I know in the U.S. get to keep their booty.