I myself tried in another gamejam to make a game with wires and logic gates so I know how hard it is to make it work. In level 2 I found the concept pretty interesting. But at level 3, I felt completely overwhelmed by all these nodes and I didn't know what to do. Instead of introducing many new nodes in a hard level (in that case the Or node, Switch node and Not node), I think it would be better to give the player more time to familliarize themselves with the different mechanics.