End update new biome, mob and item

As you probably know there are lots or suggestions for an end update but I won’t to be direct, I think the end is in due for an update. The end battle is classic and it not that it more the outta islands were you can find the ender city’s. As it great to find elytra’s and stuff there and loot but that’s really all players go there for. My idea is we add a new biome to the end which is purple wood and with that biome there should be new flowers maybe or something like that. This biome would spread a bit around the outta islands and make the end a lot more fun. Now I thing this new biome needs a mob to be with it other the jsut plain enderman or sulkers. And I idea could be that this is a mob you could keep as a pet as we have many hostile mobs and no peaceful mobs in the end dimension.As is Harry Potter fan I would say maybe something purple thst looks like a puffskin, another thing it could be is a bird like creature but is not a phantom. Idk, and the the item it could drops is a a shell or some kind and the use is if you tool is nearly broken or something the shell can essentially fix it when you put the tool and the shell in a crafting/anvil . It could also be used with armour trims but will not craft into armour and what’s cool is I think you should give your tool like a purple outline if you used the shell so players know there tool has a few extra durability. Thank you for reading and I hope you consider this idea.