My guesses for the first two remain:
Daredevil
Moon Knight
Iron Fist
Brubaker has written both Daredevil and Iron Fist before, and the latter has been quietly dropped from New Avengers, so he's a dark horse candidate for this team.
VENGEANCE OF THE MOON KNIGHT will last up to at least issue #7-8, but it sells too low to last beyond issue #12. Marvel may decide that it is time to give him a rest, at least in terms of ongoing titles.
Beast? So, Marvel wouldn't let Dan Slott have Beast for an Avengers title, but they'll let Brubaker? Even when Bendis Himself was declined Magneto for his Cabal? I don't buy it. Marvel would rather allow SWORD's cancellation to make Beast fade from memory than to allow anyone outside the X-Office to have him. That lesson was apparent in the late 90's.
(In Marvel's defense, Brubaker seems to outsell Dan Slott, so if they did allow him Beast, they could claim "he sells better" and is worth the terrifying risk of putting someone from the X-Men besides Wolverine and Storm in the hands of another franchise again. Still, Slott's issues of ASM still outsell most other runs on that title.)