I agree. They also need to release their phones on every U.S. carrier when released.
There needs to be a successor. Samsung, HTC, Motorola and Apple don't rest on their laurels and stay content with the status quo Microsoft shouldn't either. If you want Microsoft and in turn Windows (phone) to gain market share and give other OSs a run for their money (and gain developer interest & support) there has to be a better flag-ship every year. Most consumers want the bigger and better admittedly me included. I've sold my 1520 and I have a iPhone 6+ on it's way. I know the 6 is not revolutionary but, it's incremental changes in conjunction with what I consider an excellent wearable coming make it very desirable.