The user friendly option would be to print the amount of RAM in very large letters on the PCB.
There happens to be a lot of suitable surface on the PCB to the right of the text "Raspberry Pi 5" on the PCB anyway (§). Right now the amount of RAM is hard to read and easy to modify (move a little tiny SMD resistor).
Drawback: You need different silkscreens for different amounts of RAM.
Drawback: You need different silkscreens for different amounts of RAM.
Btw, if you're worried about RAM-swapped units you can already verify them as described at https://geekworm.com/blogs/news/prevent-ram-swapped-raspberr...
--
(§) as can be seen here https://pip-assets.raspberrypi.com/categories/1129-pcn/docum...