Optional Ingredients for Grid Recipes

[TonyLiberatto]

Could we have optional ingredients for grid recipes?
An example, we have 3 cordage items in the Neolithic mod. Sisal-twine, Sinew, and Leather Strips.
When making a recipe for a tool I actually need to make 3 recipes, because there is no way to have optional ingredients unless they are variants of the same item.
In some cases is possible to create variants, but sometimes those items are already variants of other items. Sisal has its own variants, (fiber, thread, twine, rope).
In some other situations, blocks are completely different but could have the same function inside a recipe.
What I would like to have is something like this:
{
ingredientPattern: " F W_W WWW",
ingredients: {
"F": [ { type: "item", code: "animal-leatherstrips" }, {type: "item", code: "sisal-rope"}, {type: "item", code: "game: flaxtwine"} ]
"W": { type: "block", code: "game:planks-*" }
},
width: 3,
height: 3,
output: { type: "block", code: "game:woodbucket" }
}