Thanks @Ian Smith, would love to understand more about why you'd like that feature. Are you going to the top echoes screen and seeing the same thing every time or would you like to discover more podcasts, or both, or something else?
@Daniel Mathews: I think a combination of both. The longer timespan helps find the overall best episodes that really stood out. The shorter timespan would help keep the content changing more frequently and make it easier to find recent episodes of new podcasts to listen to.