New World Generation Option

We have; Default, Super-Flat, Large Biomes and Amplified.

May I suggest a new option called; Square Biomes.

The idea is that the entire world is divided up into 'Regions' of 32 x 32 chunks (512 x 512 blocks), which is the exact same size as a Region file (how Minecraft saves worlds).

And each of these Regions is a different Biome.

The Regions are seperated by 2-chunk-wide rivers (the outermost chunks of each Region). Which can be frozen if the Biome of that Region is frozen, or can be beaches if the adjacent Region is an Ocean Biome.

The centre area (approx. 8 x 8 chunks, 128 x 128 blocks) generates the 'Hills' / 'Mountains' version of that type of Biome. Where you can build your Castle or whatever.

I made a simple graphic in MS Paint to illustrate my idea.

The black grid lines are the boundaries of the chunks.

The grey in the centre is the 'Hills' variant, or the 'Deep Ocean' variant if the Biome is an Ocean Biome.

The blue at the top and left are Rivers.

The pale yellow at the bottom is a Beach, because there is an Ocean Biome to the South.

And the pale blue to the right is a Frozen River, because there is a Frozen Biome to the West.

https://i.ibb.co/vYf6sj8/Region.png