>>1212089>No straight roads>Endless zigzaggingAdd traffic arteries.
>Triangular lots>Triangular buildingsThe lots can be trapezoid (right, isoceles, and 3-sides equal).
>Incompatible with railroads and highwaysAgain, traffic arteries and corridors.
>Incompatible with existing urban gridsHexagonal planning is not that novel actually, but it's definitely used less than it could.
http://web.mit.edu/ebj/www/Hexagonal.pdf