I know Idleon Toolbox has this feature where you can plan crafting items and it breaks down exactly what you need and how much, but i think it would be nice to have that feature in game. Similar to how the Quest Helper shows on screen, it would be nice to have a "Crafting Planner" to have on screen too. This helps us gather exactly what we need and not have to constantly refer back to the anvil to see it.
Edit: An option added to options to enable/disable it would be nice, basically its just a reskinned quest helper