It's nice to see this - I'm definitely interested in seeing computers built and designed for Linux. I must say, however, I don't see that need for desktops. Custom desktops are relatively easy to build, even for customers. A well designed linux laptop, with no driver issues, good build quality, that doesn't sacrifice performance for thinness? That's what I'm missing.
Well, I have no issues building a desktop, but if somebody asked me about what (modern) components to choose for no driver issues, I wouldn't know. Avoiding issues and getting support could certainly be worth something.
I've been custom building my desktops since the 90's and I can't remember the last time I had an issue with hardware, I think it was a Geforce MX440 so ~2003.
The driver story on desktop hardware for Linux is absolutely great (in my experience) if the hardware has been out 6mths or more or uses a core chipset/device that has.