Why the heavy Focus on Asia then? Also literally any animal has adaptations that help them adapt and survive (except pandas xD).
Would be weird to get four animals from Asia and then randomnly 3 animals from anywhere else.
Although i guess the Wolverine technically counts for NA and Europe as well.
Of the animals mentioned the only one that is unique ir special is the saiga, and maybe the sloth bear in a way when compared to other bears.
For an adaptations or evolution focus pack i would expect animals like echidna, tamandua, aardwolf, aye aye, colugo, tree kangaroo, shoebill... You know the classic weirdos.