I think we can count on 29 habitat mammals tops and more likely around 22.
Despite all this I just hope that less popular animals would also get some chance.
But looking at the rising quality of the mods I see a bright future for this game.
More unique rigs over repetitiveness would be a great solution.
We need especially more:
- Marsupials (wombat, tassie, tree kangaroo, platypus, echidna, wallaby)
- Birds (cranes, storks, ibises, goose, ducks, pelicans and tons of flying birds)
- Aquatic & Marine (walruses, fish, maybe manatees or maybe even one or two Cetaceans)
- Rodents (Capybara and porcupines - I know that hares are not rodents but a hare would be also nice)
- Monkeys (howlers, spider monkeys, different macaque, baboon, vervet monkey, langur)
- smaller carnivores (Fossa, Wolverine, Serval, Caracal, coati, kinkajous)
- Xenarthrans (sloths, armadillos, tamaduas)
That would open a whole new windows for the modders community.
I wait anxiously for the Red River hogs and Maned wolfs - but looking at the list I hope they are given at this point. But you never know

Look at the poor Wolverine - popular from the beginning and was left out of 3 different packs (Arctic, NA, Europe) - so to be honest nothing is given at this point and everything could happen.
One thing is for sure - Frontier sill have a lot in store to surprise us