Creature updates

In the creatures update, I was thinking we add new mob to other biomes of Minecraft and maybe bring extinct mobs in. I feel the biomes need new creatures for people to see like the swamp biome to have crocodiles, forest biomes get grizzly bears and sand biome kangaroos safari biome get elephants, the ocean needs new animals as well then just dolphins and turtles. My other idea would be what if you could find a special island full of dinosaurs that you could take eggs from and bring back to the normal island. Thank you for reading this I hope one day this is considered