Maul might work - I thought that through yesterday. His double damage to Jedi will help get Gen Ani kneeling pretty quickly, and the stealth-when-crit effects of his leadership will sort of punish the Gen Ani squad crits. If you had an r7 Barriss with 150k health, she would always be standing there out of stealth and healing herself when she takes the crits - effectively tanking for a while, and also providing some healing to the sith when they take a crit when they are out of stealth, so healing them as they go back into stealth again. But Barriss would need 150k health in order to heal herself for 30k every time she takes a crit. That is do-able, since she won't need speed at all in the squad.
Rex lead with zBarriss might also work, since that also punishes crits. But you would need serious health on your team, and your Rex would have to be faster than theirs, which will be hard since they will get +20% speed and you will likely have +12% at best. Having GK also punishes crits, with his reactive taunt.
@FenrirsFirstborn I'm not sure Nute/Jango/R2 would work. The entire enemy team will go first due to Rex, so there is no stealthing everyone but Jango happening.
