I suggested this a month ago and still think it would be a cool feature.
After battling the same Squads for weeks, perhaps a themed PvP system should be implemented. Balancing characters is probably one of the more difficult tasks the developers have, so why not change it up each week based on class or something. For example,
Week 1 - Jedi & Sith gain 50% HP
Week 2 - Droids gain 50% Crit Damage
Week 3 - Scoundrels gain 100% Evade
Week 4 - Jawas and Tusken have +25% Speed
Week 5 - Rebels are immune to Special Damage
Week 6 - Empire is immune to Physical Damage
Something like that.