I added the schematic for the current board revision.

So far I know of 2 problems in this revision :

1. I used the wrong footprint for my pcb-mounted buttons at the front and therefore I cannot mount them.

2. My soft power-ON/OFF scheme only works when it is the only part of the board that is assembled. When everything else is mounted, power state just follows the state of the button. I make do with a jumper on the PW SW pins for now.

I had made a cute little simulation of the circuit, but it did not survive contact with reality. I blame my very limited analog design skills.