New Headmaster/Headmistress fics?

Can anyone recommend Harry Potter stories where there is a new Headmaster/Headmistress at Hogwarts and it is *not* McGonagall or Snape?

The only one that I can think of right now is Dazzleberry's A Position of Power, which has an OC replacing Dumbledore.

I'd especially like to see stories where Flitwick or Sprout became Head, as logically, they both must have seniority on Snape, as well as not having his dubious reputation as former Death Eater.

Crazy dream-based plotbunny

Don't you hate it when you dream you read a wonderful story but you can only remember part of it when you wake up? I had one of those last night,( a NT/RL/(SS) one... )

I think the story was about grief, and healing and the disruption a society goes through after a war, and how people change and don't change in response. It would be enormously long, but the only really good scene is Lupin and Sprout in the Head's office, with Sprout very gently but very firmly reproving Lupin.