EVERYTHING IS RNG.
Every tier. Every encounter of every tier. It doesn't matter which lead you pick. EVERYTHING. IS. RNG.
The GI has no cooldown in every Tier, meaning he can, if the AI decides to, spam his AoE every turn, stay at full health whenever and dispel all debuffs each time.
The enemies of the 2nd Encounter get TM that cannot be prevented, so the tooltips recommending dazes are just pure spit in the face.
Tier 4, where you face Fulcrum Ahsoka, is by far the worst because she can nuke all your units in 1 basic if she EVER catches you without crit immunity.
This event managed to create an inevitability between the event being poorly designed or Inquisitors being that bad. I can't formulate a single positive thing to say about it no matter how hard I try. There is NOTHING good to say about it.
Some Zetas like 7th Sister heal and 8th Brother 2nd special are borderline mandatory. Mods cannot be below a certain threshold of stats, you HAVE to have pretty good mods.
And even with all of that, you could STILL struggle for a long time. Even Skelturix allegedly spent over an entire hour just on the Ahsoka fight alone.