Our Zoo is working on-it! The up-grades must be made and we understand that; however, the overall effort to ensure that the visitors are better routed through the Zoo needs to be addressed, along with habitat "under repair".
Signage is really very poor in most of the habitats and along many of the walks. Money, money, and of course money is a budget-killer! As the Zoo gets-on with better times, it's likely the critique will be more towards "curing" the ills. Come see it, anyway, 'cause the amenities are still very well thought out. Shucks, it's less expensive that other cities of 300-600 thousand population. For us, the best thing is hearing the kids squeal with delight when they see animals "up close".