@jelle: Oh, Europe and especially the EU regulations aren't that lax when it comes to regulating animal transfers-may they be domestics or exotics. Transferring & getting animals was never easy for European zoos either, and it's only becoming worse. Same goes for the USA, for when it comes to animal transfers within the country, each federal state has a different policy dealing with exotics. The problem is that You always have Your flock of black sheep-and if You have the money, You can actually get everything You want. Australia's (too) strict rules on ex-and import do not bother these people; I know of at least one East-European parrot breeder smuggling Calyptorhynchus sp. and other Australian parrot eggs out of AUS in his underwear...Another example is the case of a Czech businessman who called the coordinator of the European tomistoma breeding program, telling and finally also showing him that he had at least eleven (that's almost as much as all tomistomas kept in European zoos combined!) tomistomas and several other crocs as pets...
@Zoopro: I can't understand the strict rules for zoo animals due to quarantine reasons. Most of the major zoos in Europe and North America have a veterinary staff on at least eye-level im comparison to their Australian colleagues, which results in normally healthy zoo animal populations with, due to constant monitoring, a much, much lower risk of spreading diseases like pets or animal products brought over from Asia...Having to deal with this paperwork from both sides to transfer animals is a nuissance-and decreases the wish of the zoos to cooperate on an international level. Equally, it's a pity in consideration of Australia's apt conditions: the climate, the nature awareness in the public and the stable political system could be excellent to establish large ex-situ breeding programs for sub-and tropical species like Dama gazelles, Hunter's hartebeest or several endangered crocodilians without the problems and costs Europe and USA would have to face in doing so...
Nevertheless, I have to smirk when I read Your wishlists. Not only because I know more than a few European or American zoos that would love to get rid of their surplus capybaras, Bongos, American Bison, Wisent etc., but also because the Europeans and Americans would love to see more Australian animals in their zoos. While older European zoofans still marvel about the time when Frankfurt had several tree kangaroo species, younger ones hope that the DFTD will prompt AUS to send out more Tasmanian devils to their zoos(not just Denmark...

. While in former times representatives of the Australian fauna were quite prominent in European zoos (Rotterdam!), the theme "Australia" is represented in most European and many American zoos by the following:
-Bennett's Wallaby (almost hated by European zoofans for having become almost synonymous with the term "kangaroo"), Red-necked Wallaby, Parma Wallaby and Woylies
-Bearded Dragon
-Cockatoo (Galahs f.e.)/cockatiels and maybe rainbow loris
-Budgies, Gould's amadines and zebra finches
-Kookaburra
-Rainbow fish
-Frogmouth
-Black swan
-Sugarglider and one or two possum species (most often Common Brushtail)
There are a few (one might say "relict") populations of tree kangaroos(Goodfellow & Matschie), kowaris, short-beaked echidnas, wombats, Australian Water Rats, magpie geese, Australian magpies, agile kangaroo, Australian lungfish, dingos, freshies and salties and a few more Red and Grey kangaroos and koalas as well as some more or less prominent bird, reptile, amphibian and arthropods species. A few American zoos (like San Diego, San Francisco or Omaha) have additional Australian animals like quolls or Rock-wallabies, but that's it.
The following link, known to most members here, shows the European zoo collection of marsupials to illustrate what I wrote:
Zootierbestände Säugetiere
The situation is even "worse" when it comes to species from New Zealand: Kākārikis and Keas are the one You will most likely run into; add Stuttgart's kakas, a few North Island brown kiwis, Little Penguins (Cologne, Omaha f.e. )and the Chester's/Berlin's tuataras-that's most of it.
So in the case You can ease down Your goverments' rules in the future when it comes to international zoo animal transfers, I'm pretty sure the other zoos wouldn't mind offering the animals You want for a nice Tasmanian devil or two...
