It's such a pain keeping track of all the `defaults write xxx` stuff when Apple updates.
My current setup here in case useful to anyone: https://gist.github.com/dbuxton/3ccdfd88b05e1f2807c05fe32f50...
(If anyone knows how to show bluetooth in top menu all the time on Sonoma I'd love to learn - haven't done much investigation but option seems to have disappeared in the UI...)