This is what speaking out of ignorance sounds like, my dear Sweetllew3939. I don't have the whole OR team up and running for 5v5, that's why.
I don't know why you're acting like she's useless. Here's her kit as it stands within the team, with the irrelevant bits cut out.
Basic: Deal Physical damage to target enemy twice. If Satele is Taunting, deal 20% more damage and inflict Buff Immunity for 1 turn. Satele gains Protection Up (10%, stacking) until the end of battle.
Special 1: Deal Physical damage to target enemy and Stun them for 2 turns. Satele Taunts for 2 turns, which can't be dispelled. If the target enemy is already Stunned, remove 100% of their Turn Meter, which can't be resisted.
If there are no allied Galactic Legends, all Jedi allies gain a stack of Jedi Lessons for 3 turns (max 3 stacks), which can't be copied, dispelled, or prevented. All Old Republic allies also gain Fearless for 2 turns, which can't be copied, dispelled, or prevented.
Special 2: Dispel all buffs on all enemies. Deal Physical damage to target enemy. Daze all enemies for 2 turns and reduce their Tenacity by 10% (stacking) until the end of battle.
While in Grand Arenas: Enemies that are not Dazed at the end of this turn lose 10% Max Health (stacking).
Unique: Whenever an ally reaches 75% Health, Satele Taunts for 1 turn.
While in Grand Arenas: Whenever an Old Republic ally with less than 20% Health is damaged, they equalize their Health with the strongest enemy.
So tell why a 2 turn undispellable Taunt, aggressive survival mechanic, Stun, AOE Daze, enemy health reduction, passive taunting, AOE buff dispel, and Buff Immunity is "useless" or somehow worse than somebody like Ben Kenobi? Also, since you apparently don't know kits yourself, here's what she gets on top of that (in GAC).
100% Crit Damage, Health, and Protection, Daze and Stun immunity, 70 speed, Pre-taunt, passive crit hit immunity, and DI?Taunt whenever Starkiller uses a special. Mmhm. Sounds completely useless to me.