At the moment, the best approach would probably be something like the DevTerm, with pluggable compute modules. The RPi 4 CM connectors are compatible with a number of different modules (RPi and Pine64 being at the top of my head) and the DevTerm has a carrier board for them.<p>If the Pine64 folks decide to resurrect their laptop with one using a CM4 connector, it'll be immediately very upgradable.<p>Extra points if it has an extra CM4 connector for a laptop-internal network. This way you could have RISC-V and ARM64 (or anything else) immediately available.<p>On that, I heard someone is thinking about a replacement motherboard with a CM4 plug for the Framework laptop. I'd love that too.