I doubt anyone does this seriously.

I sure hope no one does this seriously expecting to save some money. I enjoy the videos on "catastrophically ill-advised" build-outs. My primary curiosities that get satisfied by them are:

1) How much worse / more expensive are they than a conventional solution?

2) What kinds of weird esoteric issues pop up and how do they get solved (e.g. the resizable BAR issue for GPU's attached to RPi's PCIe slot)