It is possible to filter by maximum number of reviews and I could add it. I am just wondering -- what would be the use case for it? Thank you for writing!
Can't think of any at the moment, but it would a nice feature to have, since I know that other ecommerce sites have that ability.
Interesting... I can't think of a use case either (other than flipping maybe) and I'd rather not clutter my site with UI constructs that will not be used (I think I have enough buttons there as it is). Can you share a link to the site where you saw it? Maybe if I see it actually implemented somewhere I'll understand how it can be used. Thanks again for writing.