I was actually wondering the same thing as the OP. I've been playing with the short-range mode of the prospick turned off, mainly because it's not a default setting and finding ore seemed to be easy enough for me even without that feature. It does seem like it would be a fun feature though and I was confused as to why it's not on by default. It being an optional feature just makes it feel too much like I would be lowering the difficulty, which I don't want.
Personally, I also love the soil instability and really think that should be turned on by default, too. Soil instability was unironically one of the things that convinced me to buy the game.