Feature request name
The name for the feature request, something short and descriptive, example: "Blockstate Support"

Feature request description
Describe what you would like added

Feature request reason
Why do you need this? / Why do you think this would be useful?

Feature request dependencies
Does the feature request require anything to be implemented? / Will this feature request only be useful when combined with another mod?

Closing due to no reply.

What would you even want in it?

makeStack isn't really used now that there isn't metadata.

most of the other methods (there really aren't many) are ItemStack specific (individual ItemStacks can override it, not limited to just the item)