I couldn’t find a killer innovation that would be likely to make iPhone or Android users envious, except possibly for dedicated Xbox users. Even the built-in Office can be replicated with third-party Office-compatible apps on competing platforms; and the iPhone and Android phones also can interoperate with Microsoft’s corporate Exchange email, calendar and contact system.
So for now, I see Windows Phone 7 as mostly getting Microsoft into the game, and replacing the stale, complicated Windows Mobile system that preceded it. It will get better. The company is already working on a copy and paste system, and said it is coming early next year. But, today, I see Windows Phone 7 as inferior to iPhone and Android for most average users. It’s simply not fully baked yet.