A new dimension : The Steller Boundaries

The steller boundararies would be a new dimension that you would have to point a beacon on bedrock which would make a portal ( portals can be directional now ) and it would sort of a void dimension and a new boss mob, The Pixel Pulverizer. This dimension would be like a corrupt dimension and a lot like the over world but corrupt and very dangerous with some of the hardest mobs, The Pixel Pulverizer would be giant with around 1000 hp so the Steller Boundaries would be end game stuff, after you got a elytra, Mojang would add the rest.