I dont think Dark/Light side are specified for Republic or Empire. Light side is not always the "good" one and oposite. Sometimes Light Side choises even for republic are just insane and Darkside is more valuable and sane deccision.
I am not playing "Dark" or "Light" characters. When i am Agent i am making deccisions about whats best for the Empire.
Like Sith whats best for me and only me. I dont care about someone else.
LIke Jedi whats best for the MORE peoples, bcs i feel responsibility against them as the guardian of peace.
Like Smuggler its just all about whats best for me in credits way ^^
And like Bounty Hunter ? Mandalorian the man of Honor and Battle. Always honored and directed by mandaloritans code ^^ but also seeking strong enemies and combat itself and have no mercy with weaklings.