Kowing that blender is hailed for its cycles node system and also used in after processing
And we like to see it in more areas (particles / hair / animation / game engine / … )
Then i saw this movie, here they create objects by a node system, watch movie on that page.
I got to say i’m not sure if it would be easy or handy, i think complexer shapes might be hard to do (character, hands etc).
But still its an interesting aprouch to create 3d shapes. might be posible for Blender too, well basicly its a node system to alter object data (and perhaps blender allready has it in an procedural addon form, i’m not sure).