I wonder if votes on a community wiki should be rewarded as well like in the normal posts? If I understand the concept behind the voting system correctly, good or bad community wiki behavior could be rewarded or punished as it is a value-adding form of activity.
Of course, not applying the regular rep values, but more like a +1/-1 style, therefore, controversial wiki entries should net 0 for the answerer and for the display.
Other option would be to have badges for these purposes instead (do we have these already?)
(Note: I'd like a discussion with views, points and arguments, so when you post a "no, by design" answer, please explain it a bit at least.)