New feed format being developed at https://jsonfeed.org/2017/05/17/announcing_json_feed
Yep, already ahead of you. They emailed me about it. I’m happy to support it but I’d prefer if support came from the Python feedparser library. If that happens, I’ll integrate it.
I added a ticket just now to the feedparser python library: https://github.com/kurtmckee/feedparser/issues/103
Just added this. I’ll blog it tomorrow, but please let me know if this is working for you.