I feel strongly like this about Google Maps. The underlying product is nothing short of miraculous, but the UI is infuriating. If I create a route, my markers disappear. Clicking on the map doesn't show businessses anymore. Why can't I navigate to another city and browse the map at the same time? Why hasn't Maps graduated to the equivalent of tabbed browsing?
Every trip, I'm reminded of how disappointing Google Maps is. Simple things like trying to find a laptop-friendly cafe and getting random cafes represented by a close up picture of someone's cappuccino. Realising that I'm driving 10 kilometres to do a U-turn. Having no way to bypass a blocked road. The very clunky waypoint management. Aagh!
I want quality of life improvements more than I want new features. It's weird that a company with so much resources can't create powerful tools.