I'm completely scrapping everything and starting over with it. I love the animals we got, but they should have been nowhere near priority. Our 6th caprid (and fourth in the last three packs), 8th bear, and whopping 14th cat, yet not a single bird, feels like a total slap in the face. Yes, I want to appreciate them for what they are and be happy with what we got - and I am, these are all animals I like overall and will use -, but critique is how the game (or in this case, probably the next game) improves.
Trying to stay somewhat realistic for a Zookeeper's grab bag pack:
Start by bringing back the hamadryas. It's fine. A solid pick that feels justified for a final pack.
Sticking with monkeys, obviously we need a South American one. Almost any is fine, but I'd go with a black howler monkey.
Now to the most glaring omission: birds.
White-faced whistling duck. It's been talked about at length how good this species would be specifically, and I totally agree. Almost any duck would do, but this is one of the better choices
Burrowing Owl. An oddball pick that actually adds a lot. Honestly, it's one of the most underrated animal picks, period. I wish it was brought up more. I usually see a turkey suggested for a NA bird, but these guys are significantly more common and have a much wider range, from Canada all the way to the bottom of SA. Not to mention I think an owl, regardless of species (with this being the only one to work as a regular habitat animal), would probably be a big seller to a more casual audience, making this a pretty easy headliner.
Now for a reptile, since I think it'd be a disservice to the diversity of zoos to not include one, I'm gonna go with an Argentine black and white tegu. Another underrated "oddball" that's ironically more common and arguably beneficial to the game's roster than the big-name mammals we got. This is pretty much a stealth Latin America pack at this point, but who cares, it needs it. The actual pack is nearly all Africa and Asia anyway.
For the non-monkey mammals, I'll give another remnant of the original pack in the Southern Pudu. The dik-dik really grew on me even without seeing it yet, but if I have the opportunity to swap it for something better, I might as well, so why not another rep for the horribly underrepresented non-tropical South America? For the inevitable ungulate (which yes, only one. Sorry not sorry but they really didn't need two in a final pack.), this is one of the best case scenarios.
Lastly, but definitely not least, is the good ol' Goodfellow's Tree Kangaroo. I wish we got at least one of the Papuan trio before support ended, so I might as well go with the most requested one.
I'd keep the scenery so long as it ends up being a lot of general zoo pieces and not party pieces, though I wouldn't be upset moving those pieces to the free update (hell I'd ditch the leopard for them without a second thought) and putting an exhibit animal here. Once again, I'm staying realistic, so no flying birds unfortunately, but it is pretty strange that the game ended without a chameleon or cobra, so I'd probably go with one of those, though I'd massively prefer the tuatara personally.