On "California Faucets StyleTherm Shower Platform"

The single-valve approach sounds clean in theory, but it's a maintenance and troubleshooting nightmare waiting to happen. One cartridge failure takes out your rain head, hand spray, and body jets all at once, and now you're explaining to a customer why they need to tear into the wall instead of swapping a simple part. For shops doing service work, this is the kind of spec that looks premium until you're the one on the hook at 7 p.m. on a Friday trying to isolate which zone actually failed.