Personally I don't have much use for docks. If I want to use the iPad, I will want to pick it up and hold it in my hands. With a regular charging cord I can hold the device while it continues to charge.
Also the dock connector is in the wrong orientation for watching movies, which seems like the most obvious use for a dock.
Also the dock connector is in the wrong orientation for watching movies, which seems like the most obvious use for a dock.