One request that is often requested are different feeder types for lagoons. Not only to cover the range of prey options these prehistoric marine creatures would have eaten at their time, but to also act as an ambient decoration, such as placing down jellyfish, octopi, and ammonites.
One feeder type I think would be wonderful if we have a plus sized option of the tuna. The current tuna we see in the game looks to be blackfin tuna, as they match the coloration seen in the image above while also being appropriately sized for marine reptiles like the elasmosaur and plesiosaur to eat.
I want a plus sized version of this feeder so that it would be more exciting seeing our larger marine predators really show off their biting prowess. Megalodon, Kronosaurus, Dunkelosteus, and Mosasaurus are shark feeders, and they would have a unique position of being big enough to eat other marine creatures like the Ichthyosaurus and Plesiosaurus whole. When it comes to the tuna we populate the lagoons with, it looks really small in comparison, in which they would often suck them into their mouths.
This is still cool as they are so big they suck their prey into their mouths, but it lack that aggressiveness when taking down larger prey that is Ichthyosaur sized. I think having a plus sized option of the fish feeder would be a nice option, one that dispenses Pacific Bluefin instead. That way we could enjoy how they eat from the shark feeder, while also seeing them hunt fish much bigger than what other marine creatures could.