@marcdk I think no one among the team will ever work on such a feature. Otherwise just make an overlay for retroarch by yourself, and set your shortcut in that overlay + edit retroarch config file to use that overlay.
@subs Thanks for the info. I don't want to add a 12v power supply just for an LED so I think Ill just use the button without the LED, and look for a 3v power button/LED to replace it with in the future.
For me it is working without a problem. I have the following config atm. When hdmi is connected at boot it uses hdmi If rca is connected at boot it uses rca. Just be sure to delete the noobs autogenerated settings at the bottom of the config file. For overscanning i just use the overscan option in the recalbox emulationstation settings. ---- disable_overscan=0 sdtv_mode=2 hdmi_group=1 hdmi_mode=16 #Overclock# gpu_mem=256 arm_freq=1100 sdram_freq=500 core_freq=500 over_voltage=5 temp_limit=75 ### kernel=zImage disable_overscan=0 overscan_scale=1