I'm sensing some regional bias when it comes to more obscure/rarer picks. So far two small zoos have been featured, with one exhibit each, and both are in Wisconsin- Racine's Stork Aviary and Henry Vilas' Wisconsin Heritage. Hopefully there are more obscure/smaller picks from other parts of the country, as it'd be a real shame if certain parts of the country are overrepresented due to what regions of the country the OP knows best.
I enjoyed reading about this exhibit, however, even though it doesn't seem like something that's a must-see. While different species may be included, I can think of a good number of aviaries for a large bird that are much more impressive. The inclusion of tufted deer doesn't really make this aviary super unique either, as small ungulates are a relatively common inclusion in aviaries (Klipspringer, Tufted Deer, Muntjac, Pudu, Chevrotain, etc.). Overall, this exhibit just feels like a kind of average walk-through aviary, which happens to hold an impressive, rare species of bird.
To concur with what
@Pleistocene891 alluded to, I also feel as though the species played a big role in the choice of this exhibit. Especially since the similar exhibit was the only other holder of the exact same species, making it seem as though this was a choice for this specific species of stork. If the species of stork didn't matter, then perhaps the other similar exhibits should've included an aviary for a different species of stork that's also impressive.