Going to be some very expensive gas.
"Apollo samples typically showed helium-3 concentrations measured in parts per billion. That means enormous volumes of regolith must be processed to extract useful gas. The basic industrial recipe is straightforward on paper. "
All the moon does it control the tide.
It’s a barren irradiated, lifeless rock.
Short of blowing it up, to my knowledge there is virtually nothing we could do on said moon that would affect us at all on earth.
Yah!! 😜 That’s not all though, surely.
We could lower the entire lunar surface by several meter and not have a dent in the tidal effect