This is something I've been experimenting with. My intuition is that the scene graph will look a lot more like an AST made from algebraic data structures than a

This is something I've been experimenting with. My intuition is that the scene graph will look a lot more like an AST made from algebraic data structures than an OOP actors network. Down that road, the system looks like an optimizing compiler with the really tricky added bit of iterating in response to user input.