The first item on the author's wishlist is 'sync with realtime TfL data (which lines are down etc.)' - if current travel conditions could be persuaded into this map in real-time, and (also on his wishlist!) the presentation massaged into the classic schematic Tube map, it would make a wonderful tool for getting around London. Anyone who lives in the city quickly gets an instinct for what routes to take around the Tube at different times of day, but for those of use who don't, something like this sitting on our phones could be a marvel.