NZ is apparently teetering on recession at the moment, and as snow leopard pointed out the global economic crisis will have ramifications for zoo projects.
the ASMP for Asian elephants would be greatly enhanced by New Zealand involvement which was a factor in its formulation, but not critcal. Australia Zoo, Taronga, Melbourne and Perth would represent a viable program in their own right.
on the other hand, if the elephant development in Auckland went ahead along the lines proposed with a large herd then it is a sound proposal, good for elephants and probably for the zoo too from extra gate receipts.
realistically, the new zealand and australasian precincts are probably the greatest priority atm.