i have no idea if it would need to be native or a channel would do the job but it would be sweet if there was a means of having user selected rss feeds scrolling across the top of the webui & eventually clients showing latest headlines.
Why not, could be cool if more fleshed out and integrated. Although I think Plex shouldn't be a do-it-all-in-one software and people would probably better use a dedicated RSS reader for this. The only integration I see would be for media RSS feeds, such as movie and tv show news, episode announcements, etc.