The leaders i omit are those that i have nothing to add:
Keta is now a double battle, and can be quite a rollercoaster, yet fun.
Revenant Keta was a pretty big jump in difficulty, especially on intense, but at least normal got toned down. I tried to cheese the game this time arouna and he still made it difficult for me to do
Marianette That's subjective. The biggest issue i had with Marianette was her Ambipom lead with the power to ohko stuff with fake out and tail slap/beat up. I was lucky i had my trusty Solrock and the AI was too dumb to use Beat Up.