I think Nokia needs to stop playing the chasing game. Instead, create a new, cool, high end phone/gadget that "wow" end users. Hire someone with great imagination from Hollywood to throw some cool idea of futuristic handheld devices (thinking the portable panel used in research center in Avatar that transfers information wirelessly from the workstation and take control from the panel ) to the product design team.
Human being likes attractive/beautiful stuff by nature. But how many of Nokia phones in the market nowaday have good appearance ? There may be more sales of N900 if it is half as thick and have a larger yet ideal screen size.
Stop chasing, Nokia. And start creating.