None has the broadcom chip. So if you want to make a custom hardware project based on the broadcom chip that's in Rpi you can't. So if that's on your radar as a

None has the broadcom chip. So if you want to make a custom hardware project based on the broadcom chip that's in Rpi you can't. So if that's on your radar as an eventuality, you can just as well ignore the whole rpi thing, and start with more easily available chinese SoCs. That's why there's much more hacker friendly innovation around Allwinner SoCs for example, than the SoCs that are used in rpi.