I'd rather they included a subtitle to it. Even if it's not a sequel to anything, there's still precedent for having the 1st film of a series use a subtitle. SEE G.I. Joe: The Rise of Cobra, The Lord of the Rings: The Fellowship of the Ring, Percy Jackson & the Olympians: The Lightning Thief, Pirates of the Carribbean: The Curse of the Black Pearl, Cirque du Freak: The Vampire's Assistant.
I'd go with Superman: The Man of Steel
or Superman: Last Son of Krypton.
Frankly, I'm really bugged by the lack of subtitle in the new Star Trek
movie. It makes it more difficult to easily reference it in a discussion with the other 10 movies.