Kradek posted... I disagree on that. He's the most "regular dude existing within the system" that the series has ever shown. Like when he killed those corporate guards, it was out of self-preservation, not because he's some homicidal sith/Imperial officer cruel desire.
Also how he gets used as a pawn that just wanted to be a mercenary and ends up actually believing in the cause.
The whole stuff about them being from a planet that if I'm not mistaken was genocided of their people, making his origin so mysterious. Not sure how I feel about that, hoping there's more to it for it to really make an impact beyond "Empire genocided my race". Yeah, sure, but they've done that before. I'm hoping there's something more, I guess.
I agree with your other 2 points, but the last point
it wasn't so much genocide but the fact that the planet Andor came from was environmentally destroyed by the empire because because of a mining disaster they caused and abandon it as is. The whole point was to show how the empire treats things under its rule, where they insert themselves in everything like eroding customs and cultures of the indigenous people of a planet and unjustly arresting people for whatever reasons, which is suppose to be ironic because that's how Andor got arrested and not because of his involvement with the heist. The whole main point of the show is to show what actually sucks about the Empire and why people actually want to rebel against them.