My personal hopes are that we will get some more specific dlc in the future, which would hone in on one region/culturegroup and flesh them out nicely.
In the best case these would be no standalone regions, but suplementary to what we allready have in the game, example would be a pack surrounding the floridan swamps, an island/madagascar/oceania pack (i feel like the best way to tackle it would be one animal from neuginea, one or two from newzealand, one or two from tasmania, maybe something like a monitor from neuginea, kiwi and turako from new zealand and tasmanian devil and a wallaby from tasmania with a building theme around moa culture), a pack that concentrates into some specific region in southamerica or asia, like an Himalaya or Andeen pack and so on and so fourth.
The problem with the first row of dlc was, that most of them wernt suplementory, but had to carry the burden of being the only representation from that continent.
Now we just need to hope that when they have rounded up all continents we will get more supplements instead of "should have been basegame" animals.