Cool idea, but ultimately it doesn't matter what I or anyone else thinks of your idea, it's about your customer. I'd say don't build a product but instead build a landing page with the 'product' for sale (get some design mock ups done) then try and sell it and see what happens. This is similar to what the article says about talking to users but instead bypasses any mistakes you might make and getting false positives. If people buy that's a great indication there is demand and you can then evaluate if you should build it or not.