I'm finding it difficult to place GotG inside the superhero bubble, tbh. It just sounds so... distinct from the rest of the blockbuster superhero movie landscape, let alone the rest of the MCU.
Of course, the final product could turn out to be formulaic as owt, but still.
I think the fact that they've all been written as anti-hero's should keep it fresh. They're bound to go Hero at some point in the film though to actually live up to their names.