Wow! I think the pack looks great and has a fair price tag.. amazing to see so much whining about it. Sure, I'd love more animals, but that would mean a longer wait between packs and a higher price... Speaking for myself, I like smaller packs more often. - Some people seem to think that this is all the SA animals we'll ever get - I don't see why that would be the case.. There's plenty of time for adding more SA animals once they've added some animals to the other continents that are still missing content (e.g., Australia) - I wouldn't be surprised if we see more animals added in later packs, but with fewer build pieces.
On that subject, I LOVE the scenery and foliage that we can see in the trailer - specifically the bamboo building pieces (super handy for LOTS of themes, and even for generic zoos), and the Bromeliads (which add some much needed colourful foliage), the tree roots, and what looks like some rope elements...? There are also some butterfly build pieces, so I'm hoping for a butterfly spawner (it'd be great to be able to build a butterfly house). Furthermore, the choice of animals is great. Not only are they a nice range of species, which are substantially different from existing animals (except the Jaguar, which was a must-include), there are 2-3 which (probably) have relatively small area requirements (capuchin and anteater), which I've been hoping for... Like some others, I'd like to see some more generic zoo stuff at some point (e.g., backstage pieces), but I'm super happy with this!
Overall, I think it's looking great.... Great job Frontier!