Hide certain crafting recipes
Hide certain crafting recipes from the list that i don't use.
Make your own suggestion instead of hi jacking this post.
To elaborate a little more since me and OP might have different things in mind.
An option for TSM to ignore/block a certain crafting cost from potentially "spoiling" a custom price string would be great.
Example: BfA's Mass Prospecting of ores. The product of this craft is the ore itself which means that after a Jewelcrafter learns this recipe TSM actually does its job and tells you that crafting cost of one ore is worth 20 pieces via the crafting custom price.
However, I don't know if this feature would have any other uses.