From the website of the company the article is about (http://what3words.com/ http://what3words.com/) it seems they're targeting the use case of those without "a

From the website of the company the article is about (http://what3words.com/ http://what3words.com/) it seems they're targeting the use case of those without "adequate existing addressing". So an as MVP accurately/deterministically identifying the location you live could be super valuable, going beyond that in the ways you described would be SUPER useful but maybe even this would be enough to add value! Whether this is the right method of doing it is another question.