I wanted to add an external way to see when the USBC card is powered (HG AC1200) so I am playing with removeing the red led from the AC1200 card and wiring in a lilypad green LED.
I had the LED leftover from another project, so I went that route, but you could do it with any led and the correct amout of resistence. That is what I am still working on right now, 10K seems to work good and dosent drain power to much.
Lilypad LED for example. 10K Resistor, you could change out the surface mount but I suck at soldering. It glues in neatly to the extra antenna hole on the AIO panel or put it some where else more to your style.



