The Old School Hex Mapper is getting better. Notice how it creates the loop at the bottom using a very small number of simple rules. I have the feeling that it should be possible to formulate the rules required for a decent layouting of roads.
Funny how some skills thought long lost are coming back. 90° – a² + b² = c². 90° & 60° – ½ : √3 : 1.
(Also on GitHub.)