Although we complain a great deal about how much Zoo Tycoon 2 needs to be improved, we must agree that the game already pretty thoroughly complete. The game already has over 130 species and innumerable game features ranging from amusing guest behaviors to complex extinct animal creation. Although many fans would enjoy such additions as mythological creatures, the idea is not practical as it is far too controversial. Personally, I would wish to have customizable buildings as well as more species from Australia and the Americas, but neither wish would improve the game greatly. There are, however, a few minor adjustments that could make gameplay much easier. One such concerns the animal adoption menu:
The addition of the "Decline All" button in Extinct Animals was a very useful feature in that it relieved the tedium of declining each offer individually. However, it presents one small problem: Suppose that a player, in repeatedly declining all offers, has found a desired species but can not yet afford it and is still searching for another particular species. In such an instance, the player cannot use the "Decline All" button, since it would also decline the species already found, but it also becomes very tedious to decline each of the offers individually, especially since there is the constant risk of accidentally declining the desired species. The system could be much improved if the player could "lock" certain slots so that the offer in that slot would not be declined when the "Decline All" button is pressed. Rather, the offers in every slot except those that are locked would be declined.
Another useful improvement has to do with animal donations. Certain challenges and campaigns require a particular amount of money to be donated to a certain species or group of species (marine animals, endangered species, etc.) It is possible to track the amount of money donated to a particular species from individual donation boxes, but there is currently no easy way to keep track of the total donations for that species. It would be useful if, somewhere amongst the Zoo Stats, there was a chart that kept track of the total donations for each species or group of species. The same could apply to individual marine shows and tours.