Furnace Minecart Purpose and other great ideas

I have a great idea for minecart furnaces, and this will be revolutionary:

Make Minecart Furnaces Cook Items. 

You have done something like this before(minecart chest/hopper) So why not with the minecart furnace? This way people can have a mobile cooking device, and that means a TRUE MOBILE BASE! Complete with crafting table, furnace, and chests! Also movable beds would also be nice.

Another of my ideas is increasing the piston push limit, or just making a better piston with a better push limit.

And finally, My next idea is a block that can conduct redstone, so its just redstone wire but a block. This block can then be made sticky with slimeballs, to make a block that acts like a slime block but conducts redstone.