After the success achieved with the films of his most popular characters (and, especially, with The Avengers: The Avengers, the film that brought them together), Marvel looked deep into their archives to retrieve another group of superheroes: the Guardians of the Galaxy. Born in January 1969 and several subsequent attempts to recycling, these renegades regained some popularity in 2008 from Dan Abnett and comic Andy Lanning.
Then comes the film that the producer (owned by Disney) trying to launch a new series (and the sequel was announced to premiere in July 2017) and, therefore, a new platform for merchandising, franchising and byproducts. The good news is that Guardians of the Galaxy is a competent, friendly and effective film. The bad news is that except the irresistible Peter Quill who plays Chris Pratt (seen in the series Parks and Recreation) - there seems to be another character attractive enough to hold "individual" films, as if the have Iron Man, Thor or captain America.
