But it could. And that's really the point of this exercise: showing one way that it could additionally delight users, on top of providing the critical functionality it already does.
Delighting users is one step up[1] from what Wikipedia does right now. Yes, they're doing something of fundamental importance to the human race. But does that mean that the software needs to be bleak, emotionless, and, let's face it, not very enjoyable to work with?
[1] See Aarron Walter's Emotional Interface Design as described here: http://thinkvitamin.com/design/emotional-interface-design-th... for a great explanation