New Metal usages / metal structure changes

soo i know theres other things that uses metal and other suggestions that ask for more metal things or more things to use metal for but my idea is

metal nails - metal rods - metal plates

metal nails usages:
Large structures like the large water storage to hold the planks together or the large mid/late game structures soo u use metal for mid to late game due to atm the metal is only used for structures as in block form metals for the explosive factory and soo on but for the larger builds that require planks


Metal Rods usages:
Metal Rods to make things like reinforced dams that also uses the nails to make to hold back larger ammounts of water or to be able to hold other things onto

Metal plate usages:
metal plates to make larger water storages for refinement to hold more water that wood cant hold back or to store specially if metal structures are involved like the "Iron Teeth" make large metal platforms in the air using them for structures like that would make the game more longer