A node set to enable Ray Tracing rendering as opposed to OpenGL rendering. Such rendering is becoming increasingly possible due to the powerful GPU's and by using compute architectures.
All maths could occur with OpenCL, and possibly even take in current mesh port types etc in order to generate geometry.
Such a node would allow natural graphics - such as natural reflections, and real atmospheric effects. Also as this is a custom realtime rendering engine Team Vuo could implement exciting unique features that are tailored to the 'visual programming paradigm".