Everybody has a usb charger or six laying around the house, so the inclusion of the two pin euro charger is of little concequence. Though it must me pointed out, that the mini USB jack is not compatable with the phone jacks, use the supplied cable.
The wind jammer is quite a usefull little addition for anyone recording outdoors. Yes there are better versions on the market that can handle higher wind speeds, but they do not come bundled with the star of pack, the remote control. To any DSLR shooter who needs to mount the recorder close to the subject yet stand further back to frame the shot the remote is a real god send.
The mains supply would have been better if it could have been supplied with interchangeable pins for the countries delivered to, or at least bundled with the appropiate adaptor. So if you need it, be sure to buy an adaptor specific to were you will be using it.