The true best option would be something like Central America Scenery in Spring, Islands Animal Pack in Summer, Petting Zoo Pack in Fall and Mountains Animal Pack in Winter
If we add the Rhea as the anniversary animal as well, we got atleast 7 animals for SA next year that actually matter, something like Ocelot, Spider Monkey, Roseate Spoonbill, Spectacle Bear, Rhea, the right sloth and whatever is the 4. Animal in an Central America pack + whatever the carribean might get in a islands animal pack like the rhinoceros iguana or in the worst timeline the cuban crocodile or in the best timeline a brown pelican.
This would mean alot of wonderfull additons for South America, aswell as a good bunch of domestic (Kunekune Pig and Shetland Pony in Islands, Bunny/Guinea Pig, Dwarf Goat, Duck, Donkey/Cattle + hopium says Budgeys in the petting zoo pack + some oceania in islands and the discussed to death awesome mountain pack line up that only got the takin and wolverine taken out.
Sounds very save and solid to me