All of those nocturnal houses look so impressive and I hope to visit all of them in the nearer and not further future. Kingdoms of the Night and Night Hunters are close to the top of the list of exhibits I hope to see in the future, and Memphis' building is new to me but I would love to see it. I still think (dedicated) nocturnal houses are such a rich exhibit concept and I desperately wish they were more commonplace.
Arctic Ring of Life was probably the first exhibit I immediately thought would be on the list when Pachy started. It is probably one of the five exhibits I think I have seen the most buzz for on zoochat and easily the biggest one in the midwest. I look forward to seeing it when I make it out to Detroit.
River's Edge is on my list for this year. It looks absolutely breathtaking in these photos, and I like the biome focus as opposed to a biogeographic focus here. Didn't they used to have Bush dogs there too?
The Kelp Forest at Monterey Bay also looks beautiful and has always been one of my biggest desire to see in an aquarium. It's such a unique habitat and it's recreated to stunning effect.
Regarding your Polar Bear exhibit examples though, I have some disagreement in that aspect. For example, let's take Louisville's Glacier Run, Columbus's Polar Frontier, and Detroit's Arctic Ring of Life. They all house the same animal, that being the polar bear. However, lumping them all on the same spot clearly doesn't do any of them justice, because while they house the same animal, they are completely different in architecture, design, and experience.
I agree with the specific example you're using completely, which is why I used a higher number than three, and also why I explicitly did not name exhibits. I said that there are "probably five or six great polar bear exhibits" and that listing all of those would be excessive, and then used the same comparison for other animal groups to show that my issue was not polar bears. But the examples you used I would not take issue with.
You can ask yourself about the stork aviary, that is "Would you be able to see this kind of aviary anywhere else in other zoos?" Sure, you might not see the stork themselves, but in terms of the aviary itself, in my personal opinion you can definitely see the aviary anywhere else.
I'd love to hear where anywhere else is. I am not a well-traveled zoochatter by any means and I fully admit that, but I've been to six major facilities and only once been through an outdoor walk through aviary of any kind, which contained ducks and was much smaller than this looks. If there are aviaries like this across the country, I'd truly love to know about them and see them, because I think it would be a visit highlight for me anywhere.
I'm shocked you don't think Shedd has any must-see exhibits. Nearly every exhibit in the aquarium is a blow-your-socks off incredible exhibit! I would travel from quite a long ways away to see even just one.
Would you do that if all of the tanks were empty? I don't think any of the Shedd exhibits meet that standard. The basic galleries are galleries, with Amazon Rising, Caribbean Reef, Wild Reef and the Oceanarium being the only fully unique exhibits. I've not heard either reef exhibit brought up on zoochat outside reviews, which suggests to me they are not really well-known. I don't think the Oceanarium stands up to the standard of being fun without animals and I've seen criticism of the sea lion and sea otter habitats. Amazon Rising I may have undersold but the prevalence of Amazon exhibits made me assume that my favoritism of it was personal bias, not testament to quality. When I think of unique aquarium exhibits - Monterey Bay's Kelp Forest, giant open ocean displays, the absurdly cliche underwater tunnel - those are all things the Shedd hasn't done yet. I hate to sound so negative, because I truly love the Shedd and think it's a great institution.