People were quick to dismiss this because you only play as Quill. But I have to say, it's one of the strongest aspects of the game.
Putting me in the shoes of Quill, a leader, immersed me because I have to decide which path to go, what to say during huddle and what strategy to use in battle.
Eidos really put so much effort in this game's story, characters, banters, chemistry and overall personality.
It's one of the best Marvel games ever made (yes, I said it.)
GoTG = 9/10 (they just need to iron out some bugs and glitches.)