|laziness, impatience, and hubris|
I can see the point, however I propose not more levels, but two categories. One that would get points for good community, and the other for technical experience.
I am a saint because I asked lots of questions and hung out here a lot. But I'm no saintly technical expert. So, I propose points for asking questions and points for answering them.
However, many replies are just asides and really shouldn't count towards technical expertise, and many questions actually offer technical solutions.
So, maybe we have a *pair* of voting buttons for both the question and the reply. One set for community participation, and one for technical. On our home nodes we'd have a total, and title, for each of the two.
Complicated? Yes, but changing it to anything other than what it is would be. My .02
"Don't ever take a fence down until you know the reason it was put up." G. K. Chesterton