Is Sid must have?
All the suggestions I read are Sid first from arena. I have only been playing 3 days (I know, seasoned veteran) but I invested in the droid pack because I wanted more dark side for campaign and it see...
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Sid is a solid unit until you get to diversify your roster. He's easy to get through arena, and will help you tons in pve and GW as well because he's a fast unit. There's not only "arena" in this game, if you want overall value, he's a huge return on your investment (instead of scenario-specific units like Han or HK-47), that's why so many got him.
