The event-based rule for "Element in viewport" is an awesome feature.
The problem is that it only runs once per HTML page view. As sites
migrate to SPA the need for a setting to capture each time an element
appears in the viewport is becoming more necessary. Perhaps an option to
set a maximum number of times the rule can fire per HTML page view,
between 1 and infinite. An option to limit the rule from firing more
than once per unique HTML element would also be a slick addition. As in,
if you hav...