For years now we have two competing standards https://xmpp.org/extensions/xep-0447.html and https://xmpp.org/extensions/xep-0385.html and it leads to confusion and additional work for new implementers and prevents in some cases implementations at all.

According to the xmpp.org page both XEPs have each 6 implementations.

I would suggest to issue a last call to gather feedback.

After all feedback is addressed council should advances only one.