Graphviz dot support is weak.

[soniakeys]

If lossless read then write is a goal, a complete dot format representation will be needed. In addition, a mapping of dot format elements to graph package elements.

[soniakeys]

Consider adding direct support for all graph types. Consider (re)adding support to generate diagrams in tutorials. (Example, graph attributes for rankdir in adjacency list tutorial.)

Edit: These considerations done. All graph types supported, example diagrams generated.

[soniakeys]

Next feature needed for tutorials is something to highlight a path. Maybe this could be added with some hardcoded appearance without stepping into full attributes, maybe just wide lines. Maybe highlight a FromList?