I think your 3 new biomes should make use of the Forge Biome Tag
maybe something like:

• graveyard:eroded_haunted_forest
  • SPOOKY
  • FOREST
  • DEAD/DRY
  • WASTELAND?
  • CONIFEROUS?
• graveyard:haunted_forest
  • SPOOKY
  • FOREST
  • CONIFEROUS?
• graveyard:haunted_lakes
  • SPOOKY
  • FOREST
  • WET/WATER?
  • CONIFEROUS?
  • MAGICAL?

For blocks, I think making mosstypeBlock should use toolType.HOE(?like hay bale), dirttypelock should use toolType.SHOVEL, and stonetypeBlock should use toolType.PICKAXE, as effective tools.

Urn/Vase could also have a slightly bigger inventory, since they can't be doubled(or maybe have a doubleChest version, vertical, a kind of memorial monolith?)

Thank you for your good work, it's an awesome mod :D

Thanks a ton for your improvements :). The new update should implement most of them! I increased the urn inventory size, otherwise they would be kind of useless or not used at all, but I like your idea of a doubled version!