I cannot find a config that sets how much or where to generate the ores. Just an enable/disable option. This seems like a rather large oversight... Any plans to add something like that?

Hello, it normal to not found it, because in the config file you can juste enable it or disable it.
But i can add it in next update, if i have the time to do it.

I add the possibility to change frequency and height only for overworld ore for the moment.