@djsundog It's something I desperately want to do with mobile phones and those sorts of devices, since they seem to be the most prone to this kind of thing.
A lot of them would be difficult to pull off this way, since to make them fairly easy to repair you'd have to use easily-obtained components and probably larger ones too, so they'd be on the big side. I could be wrong though, and maybe people wouldn't mind if they were super repairable and not too expensive.