Please make command options to reload configs and to completely or partially re-generate virtual ore deposits. Or/and add something like retrogen for f0r.

Retrogen is already included in the mod by default - if no data is found for the chunk a new one will be created.
Reloading configs while the game is running is unfortunately impossible - the drill heads have to be created at startup with all their properties, and the ore configs wouldn't change anything.
Regenerating the deposit seems possible, I'll add a command for that.