Would make more sense if the incubator use goats, not gallis. Making dinosaurs just to be eaten by other dinosaur it's expensive.
Goat is what the feeders are for though. I think the whole idea for the automatic incubation stems from JPOG in that each carnivore had a specific species that it preferred as prey (typically something that also lived in the same region/digsite), for example the T.rex preferred to feed on Edmontosaurus, or Spino preferring Ouranosaurus. Having those dinos in enclosures together would help the authenticity rating for the park, and I imagine there are people out there who like to try and create more realistic enclosures. For the people that do want more realistic enclosures, this would be an awesome feature to have.
Players would need the option to enable/disable it and set it to create a specific dino when its total population falls below a certain amount. It would likely have to be an option thats available 1 per hatchery (or maybe hatchery slot). Unless you are playing challenge mode, money generally isn't an issue once you get your park up and running decently, not to mention unlimited money in sandbox mode. The dinos that would be replaced frequently would also likely be herbivores, and therefore on the lower end of the price range. Its a higher risk for the sake of convenience (especially in challenge mode), which I think is a fair trade-off. Along with this for it to be effective would need to be the option to choose whether or not a dino is released from the incubator automatically or not, which would just be a nice QoL change.
