I added a silly LED light to the micro SD card reader - it works as a sleep indicator as well and draws about 7mW. If the Framework is off it turns off. The LED is attached to the relatively large capacitors on the 3.3V rail of the card with a 250 Ohm resistor.
BTW am I the only one that is disappointed that the micro SD card slot isn’t the click-push kind that lets you keep a micro SD card safely inside the adapter permanently?