Just recently I found Nodekit which is very similar to Quartz Composer. I think Nodekit is a perfect model for what Blender's game logic might want to be
Secondly, a node that can hold code would be ideal so that nodes become more like organizational tools rather than strange messes. Nodekit comes with one example application called "tagtool" and the node wires go in all directions. It's very hard to visualize to the point where I almost wish that the node tree could be viewed in 3D
Imagine that you have one big node system which connect all node fields (material, texture, game, composition,..).
Changing material parameters in running game to simulate falling object in the water.... an the material specular would change directly in gameplay...
Or connect logic node editor with new modeling tools(?)Like some kind of poly reducer - LOD - far from a camera would be high reduced models with few poly's.. and if you connect it with texture node system, you could change also the quality of texture from a camera..
Or render settings nodes... you would create in your games something like graphics settings tab where you would set resolution, ot using of pixel shader....
wow, so many options come with Blender 2.5