Rusting iron blocks/Improved iron blocks

Ever since copper blocks were added I really disliked how copper blocks oxidize, but iron ones don't, since corrosion is mostly associated with iron. Therefore I suggest adding the rusting mechanic to iron. It wouldn't work the same way it does for copper to give more uniqueness to both blocks. Iron blocks could for example oxidize significantly faster and also become more brittle as the rust advances. I think it's a change that would make a lot of sense and make the game feel more consistent. It would be also a great motive to update the iron block's texture, make it a little darker and shinier, because the current one looks pretty flat and I'd say is one of the worse textures.