The thing about the Wii name is that it isn't like the hardcore gamers don't know Nintendo makes it. Right now hardcore gamers don't have a good opinion of Nintendo in general, so simply changing the name of the system isn't going to matter. What will matter is the only thing that should matter: games. If the Wii U has games the hardcore want to play, they'll buy one. Even if they do so online, so they can avoid telling a store clerk that they want a Wii U, not a siren.