Ostensibly each arrow style graphic would need an explicitly-defined "attach point" at whatever is deemed the "tip", so that the tip can be oriented perfectly i

Ostensibly each arrow style graphic would need an explicitly-defined "attach point" at whatever is deemed the "tip", so that the tip can be oriented perfectly in relation to the vertex and edge of the GraphViz graph. If nothing like that exists, I can see how it would be a very troublesome refactor.