Remus Lupin narrates the year of Order of the Phoenix, as he is sent off on mysterious work for the Order of the Phoenix--work that involves his teaching skills, his magical protection, and the help of a metamorphmagus posing as his wife.
Dora Tonks narrates the year of Half Blood Prince, as she is assigned to Hogsmeade, where she deals with Dementors and an a very skittish lover who has been assigned a mission dangerous to more than his body.
Stray (abandoned--sorry!):
Sirius Black narrates the year of Goblet of Fire, as he flees from the Ministry and his past.
Teddy's first year at Hogwarts, he meets new friends and new enemies, and is test by old questions and ghosts.
As Teddy's third year begins, his father's deadliest enemy escapes from Azkaban, with a thirst to avenge himself upon Remus for rescuing the children in Shades... Remus took his children, he will take Remus's child.
Teddy's fifth year finds him trapped, and looking for a way to escape.
Teddy's seventh year brings back the ghosts of the war's final year, as a killer stalks Voldemort's collaborators and the wizarding world comes to terms with its own past.
Al Potter's first year, and James's second is marred by the disappearance of James's friend, Bear. Can they solve the mystery before it's too late? (Table of Contents coming eventually. For now, link is to the LiveJournal listing, with entries in reverse order.)
In James's fourth year, he is short-listed for competition in the latest attempt to revive the Triwizard Tournament, this time at Beauxbatons. But is the tournament haunted by the Curse of Cedric Diggory... or is a less supernatural force behind the accidents?