Problem: The handling of Drafts is different than 20 years of prior behavior, and inconsistent with all other email platforms. Please restore the prior behavior.
Current behavior: An unsent email gets the Drafts label. The thread has the Inbox and Drafts labels. A message deleted from the Drafts label has the whole conversation thread moved from Drafts to Trash, all other labels are removed.
Prior behavior: An unsent email gets the Drafts label. The thread has the Inbox and Drafts labels. A message deleted from the Drafts label gets the Drafts label removed, and the unfinished reply discarded. The rest of the thread remains in the Inbox.