If you're making a wiring update, please make some sort of cheap, compact Boulder upgrade. With the Lihzahrd traps, you've pretty much ruined Boulders' time in the limelight, and since there's a missing gap between the Lihzahrd and old underground Dart Traps, think about adding new boulders. (There's also Active Stone Blocks, but not much we can do about THAT...)