magnet blocks

I want to add a magnet block that you can find by either mining or making a extra dense iron block that will be made by putting nine iron blocks in a crafting table. Once you place it down the magnet ore will, over time get attracted to it. Once you have some magnet ore you can smelt it in a blast furnace to make a magnet ingot which can be then crafted into a magnet block. The magnet block would be able to be crafted into a minecart to be able to place ferrus blocks(explained later) on to make moving structures, like trains. You would also be able to place it near your house to make it act as overworld lodestone, so you never have to go to the nether. I would also like to have any block be turned into a ferrus block by adding 1 iron ore to it then the magnet block can attract it from a few blocks away, it would also be able to be placed on magnetized minecarts. Please consider this Mojang I would love this to be added into the game.