This 'Snowleopard-style' solution to the zoo's somewhat outdated design is not worth two cents in my view. I have been there and while it is not the best zoo I have visited in America, it is not the worst either.
Bigger is not nessessarily better. More important is to manage properly and work with the space and resources you have than to always enlarge and enlarge.
Same as with your salary. You can have a decent life on a fairly low income as long as you are content with what you have and know how to manage your money. People with high income can have endless struggle with money if they don't know how to manage it.