Most of the issues discussed are problems with email software and not the protocol. Attachments should (probably) not be included by default in reply messages.

Most of the issues discussed are problems with email software and not the protocol. Attachments should (probably) not be included by default in reply messages. Reply to a message with multiple recipients should ask clarification to reply to sender or the group (or have a selectable default). BCC should somehow be preferred to CC - Maybe CC should be "group email"