You're paying $400 for "shinier graphics" a "better engine", a pretty UI, an improved online games service, a slightly less cumbersome controller and a bunch of ancillary features that, personally, I would rarely use.
I'll be paying $250 for slightly shinier graphics, a slightly better engine, a prettier UI, Internet access, an online games service (with better games) and a revolutionary control system that will change the way I actually play the new games that come out.
But they're still the same games you've played before, albeit with a couple of new features and better graphics. You've played Maden before, you've played third-person shooters before. They'll look good and they'll be fun to play, but there's nothing new about them.
You're still acting like they've taken the GameCube, made some minor adjustments and put it back on the shelves. Of all the consoles, the Wii looks the least like its predecessor. Why? Because Nintendo have actually innovated and taken a risk, rather than upgrading the hardware and slapping a big price tag on it.