No, I think those definitions are not bad. It's fairly clear.
It's not clear, for example, how far into cousins and things “relative” goes, but to a large extent that's a circumstance, anyway, like how close you are to your cousins and whatnot. That's worked out.
One little area that's not defined is what a private interest is. That's an interesting issue. I think, in fact, the current commissioner may have gone a little further on where that applies. I always felt that it was significantly tied to financial matters, simply because that's the sort of stuff that got reported. I generally said it didn't apply to political interests.
That's like court cases: You have precedents that are built up and you work out what the thing must mean. A number of terms in there you have to just work with and figure out how far they extend.