the end plane

there would be a portal you can activate within the end cities when you walk through the portal it reveals the end as a biome and mob filled location if you don't go through the portal or go through it a second time to revert the end back to normal, while the end looks like how it is in its current state all new mobs and blocks will not be seen or interacted with and not be able to interact w/ or see you in the same way inside of this version of the end it could have new items, structures, mobs, blocks, ect allowing for many possibilities and yet without the need of immense unwanted danger.

Thank you for your time, listening to my idea, making Minecraft better everyday, and I hope you have an wonderful day.