Leader help

In that team, Phasma or maybe Boba would probably be your best bets. However, if I were you, I'd try to work towards building a faction-based team. Like Jedi, Empire, Rebels, Bounty Hunters, etc.

Need better toons, boba is a great toon and in that lineup could be the leader, but phasma is good there too.

Drop dooku and lumi ( I hate to say that, I love her as a toon) (maybe zeta will bring her back to life).

Also what is this for arena? Do you have other arena toons ready?

I have vader 5* and sidious 7* . Can BB you help me por together a better team with the toons i mentioned?