I currently use concept maps on paper or using Cmap (https://cmap.ihmc.us/) but I agree it would be useful to have this functionality in Granthika, especially if autogenerated maps were possible. The image I've uploaded is a family tree of sorts, which is a sub-type of character relationships. There would be other sub-types with attributes like protagonistic and antagonist roles.

This would make this a purchase for me. It's what I really need. A network, not a hierarchy. Maybe auto populated from events.