I would like to support the high demand for such a component.
Graphical visualisation of data gets more and more important.
I'm working with Telerik components and I have integrated
a freeware for visualizing networks. based on an XML Export.
This is very maintenance intensive.
Since X-mas is not so far, my wish would be such a component :-)
Infragistics has one now: http://www.infragistics.com/dotnet/netadvantage/wpf/data-visualization/network-node.aspx#Overview