So, is it better to put in a sentence about representing non-ASCII
text in the group name without including a replyable address?
The main motivation is to provide a syntax for a non-replyable address
in From: and Sender: headers for cases where that is appropriate. See
the EAI downgrade documents for a concrete example.
A secondary motivation is to remove an arcane restriction that has not
turned out to be useful in practice.
R's,
John