I think a really useful cyberdeck would be something like one of the old chunky ThinkPads with the guts replaced with something smaller, leaving space for a KVM switch and other interconnects/peripherals, so that you can use its keyboard and display for an external server box, or accessing the serial console on random digital signage boxes/IOT things.
Unfortunately I think most posters on r/cyberdecks don't have the skills for SDR.
Yeah, that's basically why I disassociated myself with the subreddit and gave admin to someone else. Originally, I wanted a shared place to have links to interesting projects, but what was for me about functionality, was for most of the others about aesthetics.
The pi is just OK at best for actually using like a laptop.
I think a really useful cyberdeck would probably be something that could be put together with no soldering or real diy, just 3d printed aesthetic parts, a tablet and keyboard, power bank, etc, nicely mounted but still just some gear in a box like a normal technician would carry.
Or, something not at all meant to be used like a computer, that isn't already portable. No reason solar generators or NASes or something can't look like cyberdecks.
Or maybe something modular in multiple cases. Keyboard/monitor/serial adapter/battery/Ethernet in one, just use a phone for the actual computer part to ssh into stuff, or a secondary pi box if you really need it.