Add Deep Dark Offset plz

[XEpicLi]

When using a relatively high terrain scale, mountains can be as high as 300+ blocks. However, due to the mechanics of the deep dark biome generation, this terrible biome can generate in y=64 or above. So is that possible to add a offset in the config json to control deep dark generation? Also, will trial chambers and stronghold also be moved down in deeper ocean like monument? It looks really bad floating in water.

[XEpicLi]

Trial chambers and stronghold may have not enough space to generate under deeper ocean, so maybe deleting them in deep ocean biomes would be fine.