As per the title, I would like to see this mod add a recipe type that is identical to Create's sandpaper polishing, but can only be done with diamond grit sandpaper. This would open up possibilities for modpack devs to make more advanced/gated sanding recipes.
For example, the mod Spelunkery makes diamond ores drop rough diamonds that must be polished on a diamond grindstone into vanilla diamonds, and also lets the rough diamonds be polished by Create sandpaper for compat. This unfortunately means you can skip having to make the diamond grindstone entirely with just some sand and paper. If this "diamond sandpaper polishing" recipe type was added, I could make it so that rough diamonds can only be polished with C:C&A's diamond grit sandpaper.~