Should we extend the rules when issues come up, or keep them short and rely on common sense to dictate? But then without something being "written" into the rules, can we fairly discipline someone who violates what the community considers common sense not to do?

The latest being making fun of others spouses. We've always tried to keep this off limits and have even disciplined based on this. But there is no clear rule, we kind of did this based on common sense, that we don't pick on people that aren't here to defend themselves. Now, I can add this to the rules, but what happens the next time something happens that is obviously out of bounds, but not written in the rules? Do we again update the rules? Do we want a laundry list of rules covering every issue that arises?

This is NOT a discussion of prior events or specifics. This is solely to gauge how the community feels about more rules or whether or not things like this "go without saying".