That looks cool and all but it only generates Slavic or old English style towns. What I mean by that is it doesn't generate German style towns, where the central square is actually square with a grid going out from there to the walls.

You can see this effect in towns of German design such as Wroclaw (formerly Bresslau), Krakow (the town was rebuilt by German planners and settled by Germanic craftsmen), Pilsen, etc.