Add a dimension for Steves (players)

I propose turning the area beyond the Ancient City portal into a dimension inhabited by a race of Steves (players). Their defining characteristic would be the ability to build, mine, fight, and even craft simple tools

Overworld air would be toxic to them, causing them to turn into zombies. However, the air in this dimension is safe for them; if they contract the zombie virus, they can be cured, just like Villagers

This dimension would feature both primitive and advanced types of Steves

The primitive ones use Redstone structures that could theoretically be built in the standard Overworld

The advanced ones, however, utilize mechanisms bordering on Creative Mode capabilities—allowing for flight, block placement and destruction, modification of game mechanics and rules, environmental manipulation, and much more

For instance, the day-night cycle could be disabled in this dimension. The sun behaves differently in each biome; some might feature a twilight forest, while others experience eternal daylight (like in the Aether mod)

Dungeons would be indestructible until a boss is defeated or a specific condition is met. They would contain blocks that restore structures, alter game modes or rules, or provide wireless Redstone functionality

In short, there would be a race capable of altering the game itself. As for biomes, they could be drawn from various mods or older versions of the game

Essentially, this would be the final dimension a player needs to conquer to unlock advanced mechanics