How can one pick up the mantle and continue to import voxel models?

What must one do to import voxel models from other programs? STL files, Minecraft, etc. etc.

Ive found several threads that talk about the issue but, unless I'm missing something, everything seems so convoluted its almost why try. What's the latest ideas or path used?

 

Here it is - don't know is it workable never used it myself, but I have blank workshop models from other people.
As far as I know people used & converted 3D models from internet, not sure about other games.

https://empyriononline.com/threads/empyrion-model-import-tool.10280/

and YT video tutorial