The possibility to customize the routing for connection lines would allow to add some existing routing algorithms an graph layout algorithms to the Diagram.
There exist many custom routing Algorithms for Graphs to produce high quality drawings of graphs with nodes drawn as shapes it is important to find routes for the edges which do not intersect node boundaries. Currently the routing of edges is hidden in the XAMDiagram. If the Route could be bound to an ordered PointCollection those algorithms could be applied to route the connection lines.
AdminBrian Lagunas (Admin, Infragistics) commented
Could you please provide more detail around what you are trying to accomplish. How do you envision the API to support this?