Hire great actors just to get rid of them?

Rating: 6/10 (9 June 2014)

Bryan Cranston, Juliette Binoche, Ken Watanabe--> great veteran actors. However, the stars of the movie are newbies and a CGI monster.
The main character, played by Aaron Taylor-Johnson, is of course a soldier, who is married to a nurse wife, played by Elizabeth Olsen. Unfortunately, Aaron has one face throughout most of the movie. Maybe it was the writing, maybe it was the directing, but the emotions and character development aren't there. Same thing for Elizabeth Olsen. I just didn't care about them.
Why put three great actors in your movie, and then give them nothing to do? Of the three, Ken Watanabe is the only one who is in the entire film.
I understand the movie is called Godzilla, but the human element for me comes first. The CGI is a distant second.