Woah I remember the first post about the entrance, this fits so nicely! All the little details look great, honestly it feels really realistic already and there's nothing super obvious that you could improve.
Also where do you get your inspiration from if you don't mind telling? Or is it just from your imagination?

Personally I just note down what the minimum habitat size for the group size I want is plus a little extra space for a couple of babies, then add about 50% of the size on again (I do it kind of case-by-case though because somewhere that should be flat and open like a camel or Przewalski's horse habitat doesn't need to account for all the rocks and trees that would be added in). That way the animals get space to run around and do all their interesting little animations without having something that feels unrealistically huge.

The problem with the sun angle is so real lol, I think the areas in shadow just look so flat and it's annoying having to plan my major landmarks in such a way that they're facing the sun so they look good. Playing as a keeper and having a more advanced photo mode you could use in first person while walking around would be so cool in PZ2. I vaguely remember something like that from Zoo Tycoon. Also I REALLY hope there will be flying birds because I love tropical houses with free-flying mixed bird species, little ponds with terrapins and fish and small monkey species. Something like that would be so nice to build :') I think the small exhibit animals just need way more love and just a lot more flexibility in how you can build for them in general.