I've been playing around with a similar idea for the design of a language/tool suite I've been working on (essentially a DSL for narrative structures in games/i

I've been playing around with a similar idea for the design of a language/tool suite I've been working on (essentially a DSL for narrative structures in games/interactive multimedia), and it's been very nice so far. I'm definitely surprised it isn't an approach more are trying. Another interesting example is Antimony (http://www.mattkeeter.com/projects/antimony/3/ http://www.mattkeeter.com/projects/antimony/3/), an experimental CAD program that came out of the MIT Media Lab. The main metaphor is dataflow programming (with nice built-in Python scripting within nodes), but that exists side by side with a pane exposing a more traditional 3D modeling interface. It's not quite production-ready, but as a UI experiment I find it way easier to use than traditional CAD software.