I've just seen the scene. It's terrible. Cold-blooded. "Hans Solo" shoots a green alien (just a guy in a costume, why no CGI?), just because the alien threatened him with a gun and was planning to collect a bounty on Hans's head. I've just seen the one scene, so I can only imagine Hans is a villain. But someone who shoots first could certainly never be a hero. That's just too heinous a crime to be redeemed from; not like Anakin, who only killed Younglings and helped the Sith take over the galaxy.