After going through at least 100 games I think this has taken over my pick for best game. It's conceptually interesting, zen, and is the most unique building game I've seen in a while. The (spoiler) recursive nature of the game is also a nice touch. Minor nitpicks: the music was a bit too repetitive and I would sometimes be unable to undo a node despite it having no connections. I also had a node get stuck off screen be unrecoverable.
If you're going to go forward with this I might suggest maybe adding some text to the top of the screen (for example wealth of nations quotes) as you hit certain milestones in the game, as knowing your inspiration for the game definitely made the experience richer.