“What can the Church of England do to win back worshippers?”
Become more like the Catholic Church - stop gay ordinations and marriages and start talking morality instead of political correctness.
Personally as a non-specific kind of Protestant, I this point I think all Orthodox thinking Christians need to unite against the common menace of Islam and stop arguing theological points of little relevence.
I agree with you completely. Sadly though, they will go to their graves arguing those "points of little relevance."
**Become more like the Catholic Church**
Might I even suggest “Join the Catholic Church?”