Randomizer

it would change the drops of every singe block/item in Minecraft and it would be randomised

so in one world a dirt block could be a Minecart, chest loot or any other random item 

so if you broke another one of that item it would be the same as the last one

but if you broke something like a leaf it would be something else like Redstone 

(I would haft to say though the player spawns with a crafting table and some wood Maybe 10)

It would be a bonus setting for the world so you could just go and click a button and then the world would be randomised

it would be for the players who have already finished Minecraft in survival (aka Beaton the Ender dragon) so it would bring a new side of the game and would also give them players or any player a challenge 

also if this ever on the slight chance it did get added could it also be added to the pe version of the game