We mathematically-inclined folk like elegant systems. We like systems that have a few set of consistent rules. We don't like exceptions. The problem is that

We mathematically-inclined folk like elegant systems. We like systems that have a few set of consistent rules. We don't like exceptions. The problem is that we can't make a system like that for ethics. There are too many variables, they don't always fit well together, and often the "correct" ethical decision depends on what ethics others are using. Some ethical systems only work if everyone uses them; others cease to work if everyone uses them; others only work if nobody tries to game the system. It's a messy topic, and not one that can be easily reduced to an elegant ruleset. Not that this should stop anyone from trying. Just do it for the exercise itself. Don't expect a particularly useful result.