There is already the option to “Copy As …” HTML and Markdown.
That itself is very practical.
There is also the option to “Export” as Rich Text File.
What I like to see is to “Copy As …” Rich Text. This would allow me to copy the text into Mail (in Rich Text format) and keep the same format. Now I will only have to go through an “Export” as Rich Text, then open in Notes, then copy into Mail.
Using “Copy As …” HTML and paste it into Mail (in Rich Text format) is only approximate. Having a “Copy As …” Rich Text would thus be a great use.
“Share” “Send as Mail” also does not maintain the nice layout of the Agenda Notes.