It would be very hard to implement. Hogwarts only seems to have one teacher per subject, and many of those have given no sign of usefulness outside their own subject area (Hooch, Sprout, Sinistra) or indeed within it (Binns, Trelawney). They would struggle to take on the content of the DADA curriculum even collectively.
We do know that some past defense professors have been effective even during just one year - Tonks is considered Auror material, for example, and she didn't pick all of that up from Quirrell. So abolishing the subject would be a step too far, not to mention that it would lead Hogwarts into conflict with the Ministry for failing to follow the national curriculum.
I thought that was because Tonks trained under Moody?
"Sign up for the Auror preparation program in your sixth year," said Susan. "It's the next best thing. Oh, and if a famous Auror (assumed it was referring to Moody?) offers to oversee your summer internship, just ignore anyone who warns you that he's a terrible influence or that you're almost certainly going to die."
This is a new thread to discuss Eliezer Yudkowsky’s Harry Potter and the Methods of Rationality and anything related to it. This thread is intended for discussing chapters 91 & 92 . The previous thread has passed 500 comments.
There is now a site dedicated to the story at hpmor.com, which is now the place to go to find the authors notes and all sorts of other goodies. AdeleneDawner has kept an archive of Author’s Notes. (This goes up to the notes for chapter 76, and is now not updating. The authors notes from chapter 77 onwards are on hpmor.com.)
The first 5 discussion threads are on the main page under the harry_potter tag. Threads 6 and on (including this one) are in the discussion section using its separate tag system. Also: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17,18,19,20.
Spoiler Warning: this thread is full of spoilers. With few exceptions, spoilers for MOR and canon are fair game to post, without warning or rot13. More specifically: