I am longing for the autosale option! *
Most of my game time is spent paused while I sort out my animals, comparing them, releasing them, selling them. Yes I could give them contraceptives, but the point is that I WANT my animals to breed to supply my zoo with both CC and cash. It is slow progress as it is right now, because the constant pausing and sorting of the animals. I have 5 habitats right now and it is just barely manageable. I want to expand my zoo, but that would mean pausing my game even longer. I already put the animals in my 7 exhibits on contraceptives, because at the rate they were going I just couldn't handle it any longer hahah. I relied on them in the earlier days of my zoo for a constant flow of extra cash, so I definitely don't mind them breeding so much.
* But I'd like the option of making more management decisions. How such an option could work, is by assigning keepers to release or quick sell for cash animals that meet certain criteria.
For example. I have a herd of nyalas. 1 male and 3 females. I assign their keeper (that has been assigned to their habitat) to release maturing newborns that meet certain criteria. In my case, I only want to keep females of at least silver quality. So my keeper releases all males and all females up to bronze quality when they reach adulthood.
This should make a zoo run MUCH more smoothly. You would still need to keep an eye on things, because a habitat or exhibit could still become overpopulated. Plus keepers can't sell your animals for CC on the animal market, you would still need to do that manually. But overall this would very much improve on my game experience.