Why they haven't nerf rey?

I can kill off Rey or Leia quickly, even in a Dooku/RG team using QGJ lead, Lumi, GS, RG, Fives. QG goes, GS goes, Lumi goes, Leia may be dead by then, usually RG can stun her as the second with QG or GS assist. Opponent RG taunts, next round QGJ dispels the taunt and gives offense up, finish off the Leia or Rey if not already dead. Meanwhile, RG kept your toons from getting killed off. Next RG turn is defense up, next Lumi turn is heal. You can now clean house wit the offense up. On RG's next taunt, QG should be near or off humbling blow cooldown, will dispel taunt and give offense up again.

The match is won at that point.

There is no OP, just poor tactics or not having possession of the right team.