I do hope they add more fish to the ocean, I wanna see things swimming/crawling around. They wouldn't even have to tax the servers to do it, make it all client-side. If they're worried about people having the same experience(i.e. seeing the same fish at the same time), they could do something like use a weak rng that uses something already broadcast to all players such as the server time as the seed, and generate non-interactable wildlife from there.