Mindmup in 3D! Then we would be able to present complex systems in an easier way.
Trying to describe complex economic/ professional system, 2 dimensions are not enough. To put nodes and links with an other dimension can be more precise and easier to build and to show, so you should render a cube or a pyramid or a sphere, and give the ability to turn around the object depending on what you focus on? At least a cube would save me ;).