What is the roadmap and future of Podcasting 2.0 inside AP?

For additional features in a standardised way there is the Podcasting 2.0 namespace.
AntennaPod isn’t mentioned on https://github.com/Podcastindex-org/podcast-namespace/blob/main/docs/element-support.md so i think we should have some kind of table which shows the status and plans for every single new tag from that project.

I am looking forward to some of them being more common like alternateenclusure and transcript as well as a new chapter option but it is hard to convince either producers and apps or hoster if nobody breaks the chicken and egg loop and starts coding support.