Climbing in arena without Revan, Traya, or C-3PO

I guess either your jefi or your CLS, Han, Chewie teams are your best bets currently. However, work a bit on your mods. Your Thrawn and R2D2 reaaally need more speed. Furthermore, you can collect and OK crit dmg set with the arrow and cross from Jango, the circle from ROLO or Zeb and square from QGJ. Try it out on Han or Chewie and see if it changes anything.

Check for more improvements yourself. Good modding goes a long way in arena.