Could you provide either a FRAM or MRAM chip, something similar to:
https://www.adafruit.com/product/4719
?
That would be very convenient to add medium capacity, non volatile storage. I think MRAM is supposed to be even better than FRAM, if you can find a nice big MRAM chip that would be nice . The bigger, the better ^^ . Wondering if having it connectable through SPI would be best for speed, but maybe a dual SPI / Qwiic could be good to.