A shader free for the free MagicaVoxel by Mode Vis https://mode-vis.gumroad.com/l/scbqU will be able to be used to create apartment buildings in 2 stages 3 movements! :)
You can of course recover it in the software of your choice! ;)
Here Spline;)
About Gaugan : I just try with stripes for see how it's works!
So the AI no need you!
Just take brush not so little and infinity of landscapes can be done automatically!