Cave world planet mod idea

[Puppet]

Hi engineers ! I got an idea about creating a planet mod.

While talking about planet mods with someone we got the idea of a cave world planet, I would like some feedback about it, and maybe if talented people could bring this planet mod to life.

Description :

The planet don't have a name right now but I think about taking some mythology god's name and remaster it, like Factorio Devs done for space age planets.
The surface is completely unbuildable for some reason (either constant meteor strikes, or corrosive air...) so the player will have to get deep into the planet to explore it's well developed natural cave system. Map generation will make the world contain a lot of small corridors and some larger cavities.
There could also be very strong seismic activity, making too large cavities collapse if they are not supported by a support structure. Or either a large worm monster that can dig caves et attack player's base for some reason.
The planet also comport some geothermal wells for power ground water, and gas pockets.

Content :

There could be a lot of ores in small patches or gems maybe in the caves. The player will have to research new technologies with geological science packs, created into chemical crystallisers/crystallising chambers (that is the best idea I could find for this planet's building)
For now the technologies I could think about with geological science is laser magnifying (with gems maybe), structural integrity research also ?
Please forgive me if this makes no sense, I'm not a professional at all in geology.

And this is all for now !

I hope it seems interesting to work on and develop that planet further. If some people are talented into modding and other know about art creation, maybe we could do something ?