Well, someone is pretty optimistic here...I'm actually not a fan of these super-expensive zoo mega-buildings; in my opinion, they are quite often a waste of money, more based on the visitors' or architects' than on the demands of the animals or the zoo staff and will cost the zoo not just a lot of money to build, but also to maintain and in the end (in about 5-15 years) to destroy and replace. And did I mention that they are usually not that eco-friendly and waste a lot of energy and ressources? But well, if the paying public really needs to have this kind of attraction...but then they should not complain about rising prices for zoo tickets!
Anyway, @snowleopard: I remember that old zoo in Vancouver that was closed in 1995 I think. What has been done with the area? Has it been replanted and integrated into Stanley Park's scenery? Actually a pity that it was closed without at least attempting to improve it. My suggestion would have been to rebuild it; two ideas:
1) Divide it into two zoogeographic themes: The North-Western Pacific Coast Ecosystem with a few typical animals to give locals and tourists a generall overview of what to expect and look after when going hiking, canoeing etc. (maybe even a small colony of Vancouver Island marmots and a Kermode Bear) and, having the population of Vancouver in mind, "Wild Asia", with Japanese, Korean, Taiwanese and Chinese animals and plants in an Asian style garden setting (Snow Leopards, Golden Pheasants, Snow Monkeys...

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2) Make a "Night safari"-style zoo out of it, but with an indoor rainforest (think of Chester's Flying Fox exhibit) and animals from colder climates (like Amur tigers, dhole etc.) in the outdoor exhibits. I have been around zoos at night several times-it's always a great experience.
All in all, that might have "prevented" You from having to drive to Seattle too often...
