• Proposal 1. Encapsulate edge (and vertex) list modifications
• Proposal 2. Modify the main graph rather than checking a hashtable for temporary edges
• Proposal 3. Change the role of vertex labels, or eliminate them
• Proposal 4. Merge DirectEdge, EdgeNarrative, and Edge
• Proposal 5. Street Segments
• Proposal 6. Dynamically generated edge lists
• Proposal 7. Implicit Edges