A thought experiment: What if just the enclosure was replaceable? For example, if an iPhone 5 user could purchase an iPhone 6 enclosure and transfer his iPhon

A thought experiment: What if just the enclosure was replaceable? For example, if an iPhone 5 user could purchase an iPhone 6 enclosure and transfer his iPhone 5's PCB to the new enclosure (perhaps as easily as moving a SIM card from one phone to another), then as far as the most of the non-technical, status-conscious, exterior design-focused world can tell (this probably excludes you, gentle HN reader), does the user have an iPhone 6? What if were true that non-technical consumers buy phones in large part because of how they look? After all, the differences in functionality between, e.g., Samsung's and Apple's, phones are relatively minor. Many phones from different manufacturers are more or less the same size.