@ArnoldNeumair @RonMaimon @Dilaton @dimension10
I have enabled a feature that enables additional sort orders for all categories (including reviews). The start point is the categories page (tab at the same line as our logo). Select there the desired category ('Reviews' for the request related to this answer) and you get as a result page with a sub-navigation bar. There you may select the desired sort order.
Q2A defines a sort order 'Hot'. Hotness is determined by the attributes set in "Relative importance for question hotness", at the bottom of Lists tab in Admin Panel (also discussed here). These attributes are
– Question is new
– Question has a new answer
– Question has many answers
– Question has many up votes
– Question has many views
Maybe your new counter could be constructed from this hotness.
By the way, this feature resolves also the feature request here.