I have much respect for the company, but I hate to say that I did not want a single one of their concepts. Every screen change, the only thing I could think was, "ok, now how do I go back to that previous screen?" every new screen showed a completely new confusing interface with non-intuitive interactions. And some screens were just plain poor usability. Example, the book browsing screen where you swipe left and right to browse book covers one at a time. Repeat...one....at....a....time. How about showing me a grid or list so it'll be easier for me to decide which of my 50+ books I'd like to read?