Looks awesome! For the <20uA deep sleep power consumption, is that out of the box when calling the ESP32's deep sleep? Or does it require any extra work like desoldering power LEDs and USB chipsets?
Oh no need to desolder, just disable some MOSFETs usings GPIOs in the code. The MOSFETs enable/disable parts of the circuit like SD card, e-paper, battery monitoring, etc