Necrothread resurrection!
Since we’re now playing with a newer kernel, 5.3.6 officially, with 5.4.6 in the works, with newer hardware device drivers, do we now have the required open source coprocessor driver with ACPI support?
No rush, I won’t lose … sleep over it. 
shot
Edit: just bumping this, and reiterating the point made by the OP, re the sleep function being used in a similar way the Vita would enter an automatically induced sleep state when low on power.
We have a notification for that anyway in the gameshell.
Even though the 100mAh drain is unacceptable, I would still prefer a quick suspend for that last 2 minutes of power for me to quickly plug in some power, and avoid losing gaming progress.
I have limited knowledge on kernel development. Did the current kernels address the co processor power drain problems?