I get what you are saying. For me, outside of the “big ungulates” like rhinos, hippos, and elephants. I think a vast majority of ungulate species are fantastic for filling up space and making mixed habitats. If you have a massive open field, and we’re making an American section, why not use the pronghorn and bison?
My big thing is we are now past the “big ticket” ungulates for each continent, and while they are amazing animals, we are now getting more complimentary hoofstock. While nice, it usually ends up being at the cost of everything else (potentially, we don’t know how Frontier decides to make dlc). Still waiting for some of the most basic birds is very frustrating.
It’s great having the Kirk’s DikDik in game, but you know what else would be nice? Getting another basic mixed habitat bird! If we had to go for Africa, a grey crowned crane and Guinea fowl would be great. While every animal is beautiful and amazing, this is a video game. So after awhile of playing with the same “toys” it gets boring. If we got 5 crane species in one year, I could totally see why people would start to get sick of them.