His time will come, its all about patience.
I'm going to play devil's advocate, the way I saw Starlord's character in the movie was a man before he was exposed to war and heroism this is just Starlord on his journey slowly walking the path of the version that will hopefully emerge. Drax well given how every time he dies he seems to regenerate a new level of intellect and power I never considered consistent other than his main goal of revenge and how he never regards the consequence of his actions.
but these are just my humble opinions as to how Nova is portrayed or which version they'll use thats another matter so I'll wait and see. If its Richard i will cheer if its Sam I'll boo.