Is it easy to disable the MPU9250 so that I can use the pins as GPIO? In this case for an ethanol content sensor with pullup to 3.3V. Or would I be better with an M5stack without MPU9250?
By adding a CAN transceiver inside, I will have a new twisted pair coming out of the case, but if I power through USB C and use Grove for GPIO I could get rid of all the pin headers and use a slimmer base.
For an order in quantity of hundreds, what customisations are feasible? Having a unit with a CAN transceiver, no battery and a slimmer base already would probably cost less to manufacture, but it depends on the quantities to design another model.