Zeta investment?

No, because it still makes the biggest difference. If Sion gets hatred, the other team has to kill him twice and he hits twice as hard. That’s significant, especially on defense. Palpatine’s unique means you have to hit him more to take him down, but it’s not a dramatic difference. Thrawn’s unique means during a fracture, he always counters, he’s next to impossible to debuff, and the fractured character loses turn meter. That’s a good addition, and it does affect gameplay while someone is fractured, but not as much as double offense and a revive. Vader’s leadership is less important in raids now because damage over time doesn’t stick in the sith raid. R2’s zeta is great, but not needed as much right now since you’re running a dark side arena squad. And Finn’s zeta is great as well, but you don’t yet have a powerful enough Resistance team to use it.