@jarvie Yes, that would for sure be an interesting type, and could make for a nice "underdog" post filter.
Other ideas from my side are (a) a filter that simply shows the newest post irrespective of reward levels or (b) a filter that shows newest posts but filters out ones that have more than, say, $2 reward?
I think any of those would draw my interest, but perhaps you can judge better which one would work for the community at large?