This is a nice concept, with some good levels to show it off. You definitely have room to further explore it after the jam if you wanted to. A few people seem to have mentioned a guiding line, which would be helpful, and I'd recommend pairing that with a drag and drop system for the nodes to allow for minute adjustments, which would put more focus on picking the right approach than finding exact placements. Overall this game is a lot of fun, well done :).