I can be either the new format (a whole World Preset altogether) or the old one (that replaces the "Default" one).

Basically, what i need is:

- Large Biomes-sized biomes (or even larger 😁);
- Pre-1.17 altitude: basically, make the overworld again occupy the range of 0 to 256 (instead of -64 to 384, that negative y altitude is so cursed imo);
- Bring back the smoothness: basically, make terrain altogether less rugged, this is much needed to building on surface, because if you plan to make a city the roughness add exponentially more work to flatten;
- Reduce cave size: the vanilla format makes caves look like gaping holes in the world, making building on the surface very difficult by need to fill the whole holes with blocks (alongside the rough terrain i mentioned above). Make their size to match 1.12 values;
- Remove Deep Dark and Ancient Cities altogether - i plan to do a separate request for a custom full Deep Dark dimension afterwards. DD on overworld just is too distracting if the player have other intents than burrow itself permanently.