Please describe the new feature or change.
Sophisticated Backpacks has a crafting and smelting interface it would be useful to have the polymorph functions in this mod.
Please describe why you want this feature.
It is the most complete backpack mod I know, I use it in my modpack and at the time of crafting I have conflicts with duplicate recipes.

Support for Sophisticated Backpacks's crafting and smelting upgrades is now available on version 1.16.5-0.26+.