That's looks great

But for my game i use a 3 dimension array : X,Y,Z

Z , becaues it's 3D and i want to be able to put 3D tiles in eight also like Minecraft, but i don't target such cubic style ; more this one :



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I made some progres :


I can switch from 3D tiles and paint the ones i need.
I used only 2 types , just to test.

Real serious level creation will come after i made the basic tiles :



Using the editor, is incredibly fast and easy to make a level compared to Blender manipulations indeed

If 3DGS had direct Blender or Wavefront (obj) import without opening MED : some simple batch converter , you drag the Blender file on it to convert directly as MDL) it would be helpfull also !