Hey!
We are both passionate about RSS 
I submitted an idea about extending RSS by adding OAuth to be able to consume exclusive paid episodes. I would love to get your input or feedback on it: [PIG] Enhancing RSS podcast feeds by using OAuth to access exclusive content
Also, I also built a comic platform (https://taddy.org). All comics uploaded to Taddy are distributed over an open-source specification. We made our own specification (ComicSeries) but I’ve been thinking that I would output an RSS feed with a comics namespace (for people that want to consume it via RSS). I’d be curious to know your thoughts on it.
If I have one question about your application, I wasn’t sure what an RSS-first applications was, but maybe that’s something you are still exploring.
Really excited to see more people passionate about RSS and open distribution.