"part of its identity is that it is small and protable"
Wii may have been the smallest console, but I don't think it was the most portable.
If I want to take my PS3 system somewhere, I only need to grab the system unit and 1 controller for each player. It uses standard power cords and HDMI cables that many homes already have.
With the Wii you've got an external power supply, a proprietary video cable, the sensor bar with a very long thin cord, and multi-piece controllers.
Oh noes! I made a positive comment about a Sony system.