Snow Leopard:
Don't plan a special trip to LA to see the new developments--they are almost without exception disappointing.
Chimps of Mahale--combined and reused ugly existing concrete grottoes, added new viewing building (one of a series of "abandoned logging camps" perpetrated on US zoos by CLR architects). Landscape is basically sod lawns with a few hotwired palm trees, and bad rockwork. Chimps got out a few times--and the security additions just made things worse (visually). Pretty nice new holding spaces added however.
Red Ape Rain Forest--three linked mesh enclosures for orangs, surrounding a large "Indonesian-inspired" viewing area. Not nearly enough climbing structures included, so often orangs still sit on the ground. Very little sense of "rain forest," even in a climate where you can grow anything. Decent holding area.
Children's Zoo--OK, nothing new here
Childrens' Discovery Center--basically education offices (nice) with a multipurpose room that until last year had not opened to the public (ran out of $$ to install exhibits).
Sea Lion Cliffs and Entry Plaza--huge, very "Hollywood" entry gate (previous director wanted visibility from freeway 1/2 a mile away!). Sea Lion exhibit is horrible--underwater viewing negated by bad reflections, generally poor exhibit detailing throughout. Good IDEA for first animal exhibit--just not pulled off right.
Campo Gorilla Reserve--have not seen this in person, but from photos clearly breaks no new ground (Dallas, Seattle, Bronx, Louisville etc. all much better earlier examples). Again, landscape detailing is crude, and poor use of outdoor glass without accounting for annoying reflections (a very common sin in zoo design).
Golden Monkey exhibit--not done yet, but basically a mesh tent with a Chinese-themed viewing structure. Will be great if they ever acquire golden monkeys, still a big question last I heard. I would not be surprised to visit in a few years to find some more common Asian primate species in this exhibit.
Pachyderm Forest--now in its third design iteration (original included black rhino, hippo with underwater viewing and some smaller species). Current version looks like a good urban zoo elephant exhibit, with all the limitations that suggests. But LA currently only has one ele, and animal rights activists have been all over them based on past bad track record. Huge expenditure--will it be worth it?
Rainforest of the Americas--haven't seen designs. But is an indoor rainforest exhibit a good choice in subtropical southern California?
Reptile House--spent over $1 million on an avant-garde design by a high-profile architect, then scrapped it and started over from scratch, in a new location. Hope it's a better design--LA had quite an interesting herp collection.
Bottom line--well over $150 million will be spent, and not one new exhibit can be described as (a) innovative, (b) beautiful or (c) world-class. A bit of a wasted opportunity. Even in LA, it will be hard to generate that level of public/private funding again in our lifetime.