It would be nice to be able to use itemstack icons for items that have a different look depending on their NBT data. A good example of this would be bees from Forestry: Their looks change depending on their NBT data, but as of right now there's no way to set that. Same could be said of a Tinkers' Construct tool icon.

Edit: This could be useful for recipes that have an NBT-specific output as well.

This is outdated, i get an error with everything i try.

This feature actually does already exist, but isn't documented in the wiki. I found it via Nature's Aura, they do it in some of their book content. Closed.