I noticed that Spectre wood can only be turned into planks, and has no slabs, stairs, fences, or doors. Would you mind adding these blocks?

Also, Spectre wood feels heavily underutilized to me. It looks awesome, which lends itself to a lot of mystical-type builds, but it'd be nice if there were a crafting recipe to give it some function, like redstone-toggleable Intangibility. Maybe even a new block type, like an Ethereal or Immaterial Blocks.