REV 5.1:
Added:
...
Upon further review, this was already possible through PA9, which enabled vbat_precharge_sw to the isolated DC/DC.
The circuit to shut off isolated DC/DC added isn't entirely useless. The PA9 enable pin enables vbat_precharge_sw. I used that to power a lot of the non-isolated stuff like overtemp comparators and fans. So we still have functionality in keeping those on to log with the MCU.
I think it also powers the contactor sense so it'd be nice to have that on whenever the board is on.
After further discussion, it is decided that two load switches would be the better alternative.