Think of how cool it would be to find a volcano and watch it erupt or to find plateaus with a valley or even a river going coming from all different parts of the seed. this forum is all about those things post if you think he should add these things or post about other cool land forms. by the way this is my first forum, sorry if it sucks.
The statement above is false.
Plus, easier said then done
Annoying yes, but useful. Also, it would have more of an adventure feel like notch wants.