Re: Still not used to their weird thread view
It is sane... most users are happy with it so as a default it is acceptable. I don't see any unintended consequences - the thread is an entity not an individual email message so if I delete the thread, it is deleted.
That threads you deleted come back when a new reply is received is a little weirder but better than having orphaned messages I reckon. And the fact deleted messages are so easy to find and undelete makes it moot in most cases.