If they wanted it fixed when it came to down vote for reward disagreement, the simple one stop solution is to remove all the curation rewards, no curators get a reward, the Author portion of the reward pool system would still go to the Author. in other words if a post has a pending payout of 10 dollars, and someone felt it was over rewarded, or they just did not like the Author, the Author still gets 5 dollars worth of Hive and the curators all those people that voted for the post get zero, nothing nada for their effort of liking a post, it was all removed by one down voter.
Of course there will, as is typical, be a million and one reasons why that would not work.
You are correct though. That at least wouldn't turn WORK the author did and they thought they were getting paid for suddenly into work they did for "FREE".