More to do with the ender dragon egg

I think that when you kill the ender dragon you should be able to do more with the egg then just use it for a trophy, like maybe have your own ender dragon. Maybe use 4 end crystals and make a square shape then put the egg in the middle on an obsidian block, after maybe a full minecraft day the egg has hatched and now has become a baby ender dragon, you can tame it with maybe ender eyes, and as a baby it can be on your shoulder kinda like a bird and it should have 3 stages not just 2, like baby then teen then adult when it's an adult you can put a saddle on it and ride it and it can spray dragon magic out of its mouth on command when you ride it but it has a cooldown so its not too overpowered. The reason why its so expensive to tame and hatch is because it should be hard to tame it just like its hard to kill it, and maybe in creative mode you can also spawn the egg and do this same taming and hatching method