You missing a Wii with Wii Fit, and a Mario Kart Wii Wheel.
Also, there is nothing wrong with liking DDR, the other games, you can blame on your wife, but the excuse doesn't work on me.
If those 2 shelf speakers are the "presence" speakers, then they should be mounted above the TV, since your center speaker is below the TV. By doing that, you can "pull" the voices up so they seem like they are coming from the TV.
Or, if they are supposed to be your rear back speakers, then well, you really have them in the wrong location