This is an interesting concept, surely not a genre played out much in Hollywood. The cast is jam packed with all stars giving great (but not their best) performances. The missing piece of the puzzle? Character development.
That's not to say that there is any lack of interesting characters, each of the four horsemen bring a very unique style to the movie (besides Henley, she's rather weak as a character), and the sheer amount of Talent present in each scene guarantees that you'll be entertained.
10/10? Hardly. But definitely a solid 8 for me. Entertaining, fun, and definitely a concept worth exploring on the big screen. Just remember, the closer you look, the less you'll actually see.