Now I've raised my share of complaintsaboutbad reviewers, so I'm willing to admit that audits are a necessary evil. But please don't make them such a burden on the people who don't need them.
Do not show positive feedback about edit reviews, or at least not more than once. Rejecting an audit is more work than rejecting a normal bad suggestion, because of that extra click to dismiss the “yay you passed have a cookie” message. I don't need to be told, suggested edit audits are blatantly obvious anyway.
Stop showing review audits altogether after 1000 reviews in that category (i.e. the Steward badge). If we continue beyond that point, we're clearly here to help, not for the badge. And if we're still doing such a bad job that we would get caught by an audit, the audits are useless.
We didn't show positive feedback on these initially, for more or less the reasons you state. It confused people.
I don't think removing audits entirely is ever a good idea. That said, we could certainly show them less often for folks with a good track record... and more often for folks with a bad one. What do you think? Maybe,
100% success rate for, say, the past 20 audits gets you at least 30 reviews before the next one,