While going through the review today I found a question first posted over two years ago being reviewed and an answer to a question that, I believe, had been reviewed previously.
The answer was posted by MrNemo to this question Fabric in a waterless world
Now my question has nothing to do with the quality of either question or answer, it is concerned with the number of times questions and answers can be reviewed. (I have my own views on their quality, but that is mainly beside the point.) The danger or risk factor is that eventually any and every question / answer can be closed especially if the culture of Worldbuilding SE changes over time. This could result questions / answers being acceptable at one point in time and not acceptable at another.
Potentially the good posts of yesteryear could be overturned and deleted by WBers with a different worldview. This doesn't suggest that the good questions of the past were exemplary, they might not be, or the judgements of newer WBers might be better than their predecessors, again they might not.
Since at any time it only takes a handful of voters to close posts. So by chance alone good posts can closed. Admittedly the capacity to reopen posts does exist. But this is not exercised to the same degree as reviews to vote to close.
What I am highlighting is what I perceive as system weakness, not a major one, but a weakness (yes, that does mean a risk factor) none the same. I do not have any proposed remedies to this issue, and would welcome any suggestions, however, I do acknowledge setting limits to the number of reviews of posts could lead to bad posts becoming entrenched (although I suspect to a lesser degree than with excessive reviewing). perhaps there should be a flag that warns this post has been reviewed before and it should be reviewed carefully on this occasion.