The quality of the new exhibits and pace at which this zoo is renovating are very impressive. When the savanna exhibit is built it looks like they will have renovated 3/4 of the zoo in less than a decade. What will they have left to renovate? Primate exhibits? New children's zoo?
When this is complete, Hogle will be a very solid zoo exhibit wise. The areas left to renovate would be the Great Ape House, which itself isn't terrible but will replaced by an exhibit called "Gorilla Forest", the Primate House (with the motorcycle cages) which will be replaced by a new penguin exhibit, and the Small Animal Building which will be repurposed as an education center all per the current master plan. All of that is subject to change because none of those projects are part of the bond measure that made the recent developments possible.