Is GW getting insanely difficult for any other lvl 80-85s?

Yes fighting multiple zeta teams (multiple zetas on them) without having zetas yourself (unlocked as soon as I could) makes it impossible a lot of the time. Lvl 83 here with one A team and a very meh b team. I already do all the retreat and loading tm on toons, sacrifice toons for ability attack tricks. I don't understand how there are so many people out there that say they've never missed a completion unless those are all the people playing since near Day one and therefore have multiple teams at level cap.