I am curious about this too. Personally, I feel like a cold primate would be an extremely good addition to the game ! Would you mind discussing this a little ? I just want to understand this point of view.
My favourite biome is Taiga, specifically a region like Nepal / North of India / South West China. When I build a zoo themed for the Himalayas, the only options I have for vertical habitats are the Red Panda and the Japanese Macaque. The GSNM would, in my view, definitely fit a unique niche, by being 1/2 cold primates in the game, and the only continental one at that. Animal experts, please correct me if I am wrong.
While I respect the reasons why a lot of people are excited about the pack, I think this animal would have made a more interesting addition than the Swan, the Wild Boar, and even the Sagia. These are usable animals and can add a lot to many Zoos, I agree with that, but I just was looking for something a little more exciting. I would not spend as much time looking at a Swan or Wild Boar, if I went to a Zoo.