Consider setting subject

[BeccaTregenna]

A usability suggestion

For end users or those that aren't system administrators, the 'empty' subject line when viewing the 'Mailing' tab of a contact may cause queries/questions. We have on some of our systems, set the subject for mailings in the database, e.g.

UPDATE civicrm_mailing SET subject = 'Transactional Email' WHERE civicrm_mailing.id IN (x, y, z)

I think it would be beneficial to set a default as part of the extension, even if just setting the 'name' as the 'subject' by default.