ok we have random mobs, animated mobs, animated terrain, but where is the random terrain?
for example to make things interesting, have 10 different stone, wood, ore, grass, and dirt textures that randomize when loading the chunk, each texture however needs to match each other slightly (so when the different textures are placed beside each other, they don't look unusual.)

this way, terrain is some part less bland, another example... when find a cluster of diamond you see they all have slightly different diamond placing in the texture

along with that... random item textures... which make every one item look unique to the other..