[JLV]

I think the real problem is somehow "quantifying" the reputation. What is it that makes a reputation, and how much of a reputation do you get for doing something?

The secondary problem determining how a reputation affects the individual NPC -- e.g., a reputation as an incorruptible law officer would be a "bad" reputation if the NPC is a member of the Thieves' Guild, whereas it would be a "good" reputation for an honest merchant.