Hi !time2play,
Regardless of your less-fond outlook on 3D graphics, you might find the following of interest (since I had a look at you "engines and tools page!!!).
https://tetrageni.itch.io/tetragenius-click-design
It is a type of tetrahedral voxel builder & I would appreciate any feedback from what I can gather would be an expert opinion.
Kind regards,
Theuns