I've been playing this game since launch and he's still not in the game. (I get it, we still don't have Jedi Luke and others. I'm not saying Jango OVER them.)
You devs have been saying you were going to do something big for the Separatists but have yet to accomplish said promise.
Have Jango usher in a Separatists faction pass as a Legendary or Marquee character. I don't care, just put him in the game. I have the money ready. I've HAD it ready.
You could also add Droideka like people are also wanting. Plus a Grevious re-work that is sorely needed.
Nothing but wins.
Edit: He would also help Bounty Hunter faction that people want addressed. Another win.
CLONE HELMETS!! Now let's get Sabine her epic helmet.