Some limitations come from how the game was set up in the first place, like how we cannot edit worlds. Watch the vid posted by another user and you will find out more. James did ask some good questions like why not give toggles and world editing tools. They would have added more flexablity to some features if they were to go back to the first stages of the game being designed, but we are long past that stage so that would be very hard. There are some good news though, story progression is totally possible, their reasoning for it not being included yet was mentioned in that same vid.
