Iron ingots are overall in very high demand across many mods, which is usually not resolved by a corresponding increase of spawn rates or other mechanics to reduce it.

With 1.17 introducing copper as new metal, we should consider using it for some recipes when fitting thematically.

Potential candidates for changes

• Cells use Iron - Copper - Iron instead of Iron - Iron - Iron for the lower row
• Blank patterns use Iron - Copper - Iron instead of Iron - Iron - Iron for the lower row
• Advanced /Basic Card replace 1 or 2 iron ingots with copper

Done in the 1.17 early game rework.