Fault lines

One thing that minecraft is lacking is fault lines and such. I think it would add a lot to the game if there was fault lines because that would also add earthquakes. Also the faults would move so land could move and mountains could slowly rise as you played. I think this would add a lot of difficulty which is what minecraft needs to have more of. Also that would mean volcanos could form and destroy structures. The major challenge it would add is where you build and what you make it out of. Also your house could be split by faults and cliffs created. Adding faults would add so much at once. I think that would make minecraft so much more fun. This also could cause very difficulty while mining but maybe only normal or up.