More rail/minecart types

I think that minecarts & rails need some work, so here are some ideas: 1: a new rail called a sticky rail that is 1 rail surrounded by 8 slime balls and can be placed on walls and ceilings, but minecarts will fall off it, unless you create a eletromagnet, it is made from a substence called: magnitite, this can be crafted by surrounding 1 copper block in iron ingots in a crafting table (to get 3), then place it behind the rail and power it with redstone, this is like a magnet to keep up the minecart. 2: magnetic powered rails, these are rails that make you go faster then normal powered rails, you can get them by getting magnitite and puting it into a crafting tabe to get 9 magnitite dust, then in a crafting table put a powered rail in the middle with 4 slime and 4 magnitite dust to get 4 magnetic powered rails, you need to power them but the drawback is that it has to be a power level 10 or more, any less and the speed boost decreases by 10% per power level at Redstone power level 5 it stops working completely. 3: a minecart idea: a item called a minecart link, this item is crafted by taking a chain and puting 4 iron nuggets anound it in a crafting table the same can be done with copper, a max of 4 minecarts can be linked, but the drawback is that it has durability the more minecarts and the faster it goes the quicker the durability runs out, the copper one has less durability than iron. I hope these get added or considered with the fair drawbacks it takes to get them and use.