Think this is the only way to go, if they plan out a consistent trilogy; loved the original first 2 movies, but 3 and 4 were dispensable, really.
Casting suggestion for the Terminator - Ryan Gosling. He plays cold and emotionless really well, and a scene in Gangster Squad
when he stalked across a nightclub floor to assassinate a gangland boss, really reminded me of Club Noir scene in The Terminator.
A normal-looking guy would be a far better infiltrator not only amongst the starved humans of the Future War, but also in the present day; Gosling is so innocuous-looking that people wouldn't look twice at him, until it's too late...