I have to say, for the most part, I agree with your statements. I do actually work on the grounds crew at the Milwaukee County Zoo and in general, the zoo does have a very "forgotten" feel to it. It's nice, a fine zoo nonetheless, and I will always enjoy it. But when push comes to shove I have to be honest (now especially because I've worked on the grounds crew for a few years) there doesn't seem to be a lot of pride in/for the zoo. Part of it I think is just the design. It was planned and built in the 1950s and 60s with a LOT of concrete and a train track and an entire forest; makes its a little more difficult and expensive (money is a reoccurring problem for the zoo) to expand or even change much at all. Another big problem I see for the zoo is its PR but I know that has been talked about on this thread before.
Whenever the zoo decides to actually change something, it sticks to what is already there and just builds off of it. That's fine, but its leaving the quality of the exhibits behind. I mean the last time anything major changed/was built at the zoo was the Apes of Africa in 1992.
Overall I think the zoo generally doesn't have the PR or the funding to make the big changes that it wants and/or needs. Moats were great in the 50s, but it isn't the 50s anymore and so much of the zoo is outdated and made out of ugly concrete but there isn't much room to make any major upgrades or changes because of the train, forest, hills ect. Even with this new elephant exhibit, sure they're taking out moose, wolves, and bears, but the "shape" will remain the same I predict.
There is so much hope and potential but the odds are stacked against us being able to keep the world class upkeep as more and more time goes on without major changes. Big cat outdoor yards, most exhibits in the zoo's inner circle, and the bear grottos all need to be upgraded and expanded, but that would require a lot of money that the zoo doesn't have, not to mention the small mammal and primate buildings that need (in my opinion) a ground-up renovation.
Just some thoughts and opinions and also a way of saying, its not just the "zoo nerds" that want these changes, its everyone.