Jorok Goldblade
Member
William Hurt is confirmed for Ant Man, too. They even feature the soda, from which Stan Lee got his gamma poisioning from.
I think they just need a character who could get in charge of a Capekiller Unit or leads a government controlled Avengers Unit (Tony Starks Avengers are unlikely for this - See The Consulant). Since Maria Hill is now working the the original Avengers/Stark, Ross is the obivious choice when you dont want to introduce a completly new character.
The other option is pulling Glenn Talbot from Agents of SHIELD, but it seems like the MCU is avoiding getting their chocolate in their peanut butter in regards to TV and film.