What’s the encryption and signing on a hardware level for? I mean dependent on what’s that good for and who controls it, it’s trusted computing, or treacherous computing as Stallman calls it…

I think the overall idea is nice, though. We had these project ideas since the SheevaPlug. Or the FreedomBox. There are some niche hardware projects as well like the Home Assistant Green. But none of those match exactly with your proposal.