Most of these seem mutually exclusive of each other
100% passively cooled, 0 Db operation
Overclocking ready cooling solution
Outdoor proof materials and finishes
Unrestricted WiFi/Bluetooth reception
I have two “passively” cooled RPI 4b cases, and they both gained Noctua fans eventually after routinely breaking 120F temps. The cases I’m using are extruded and machined aluminum and terrible for the WiFi, but get the cooling job done nicely with a quiet fan added.