The Wii is a crazy fun console with a lot of great games. But it has its share of warts. Particularly its clunky menu and submenu channels, which feel like they were designed by a Japanese toy company instead of a usability expert. And connecting with friends online is way more tedious than it should be (although play with strangers is as easy as on other consoles).
I’m sure there are more, but those are the two that quickly come to my mind. What about you’what do you dislike most about Wii?