Oceania

well leaving aside the fact that you would never get half the species you've listed (as I'm sure you're aware), my constructive criticisms are as follows...

1) it would be a bad idea to house black swan with blue duck, a worse idea to house either with wrybill, and what is kagu doing in there?
2) it would be near on impossible to keep glossy swiftlets alive
3) how do you intend on displaying the marsupial mole (given that they are subterranean)?
4) the gastric-brooding frogs are extinct

1) blue duck have different habitat requirements to other waterfowl, but more importantly both black swans and blue ducks can be very aggressive and territorial and it would probably end in trouble. Wrybills are very small waders and would probably be killed by the blue duck/ black swan. If the aviary was sectioned up it would work better (or just have three seperate enclosures). There are plenty of other NZ waterfowl that could be more safely mixed with black swans. New Caledonia is closer to Australia than New Zealand; I just thought it was odd putting kagu in a New Zealand aviary

2) swiftlets feed aerially on large numbers of small flying insects (eg, gnats and flies). They would be almost impossible to keep alive in captivity

3) that could work I guess (but marsupial moles are "sand-swimmers" rather than living in burrows like naked mole rats)

4) that's alright. As it is an imaginary zoo you could always fund an expedition to rediscover a lost population and then create a captive-breeding group to safeguard their future.