I'd like to see a "new" RSS standard based around newline delimited json, where the summary text is a minor extension to GFM (to support left/right/spread images, minimal formatting, basically match medium.com options). This can allow a common reader to do a display that renders to their own liking (colors, font, etc).

Beyond this, maybe a framework to show a single header ad on the reader giving the revenue credit and money to the original content site.

The reason for newline separated json, is simply that you can do a partial content download in the reader... the most recent 100kb or 2mb or whatever... you the most recent is on top, and allows a site to publish more than just the most recent, but you don't have to grab that. Or maybe just standardize a since=(iso-style-datetime) or last=## (number of articles).

Just a couple loose thoughts on this.