Edit for Clarification:
The changes that they’ve made are kinda pointless, I can find a hundred different ways to trivialize or otherwise annihilate the challenges, and some of them are extremely unbalanced. The boss fights are usually a joke, then there’s some random enemy or group of enemies that just instantly wipes the party. I don’t mind fights that are absolutely crushing, but they gotta balance em out with easier ones, personally the boss should be something that takes strategy, not just me dumping all my enhancement buffs, and then watching as the PC (or previously Seelah) just takes it all on singlehandedly.
I mean, oh noes they’re immune to mind-affects
Meanwhile my character with over 40 AC uses Trip, causing the mighty monster to fall over and be instantly killed by all the Attack of Opportunities
Or a certain big demon that got basically oneshot by Wend, over 140 damage on the first hit in the ground, followed by some other very large numbers, trivialized foe when it can’t hit me and then you got a bunch of other op characters not in my party joining the fight for some reason
Meanwhile, a few encounters earlier I went into a room just before where I found the owner of a sword people like to (silly-ily) sell, and encounter like a half dozen winged fiends and a couple of casters, which managed to kill the rest of the party excluding my PC with 40 AC, Magic Immunity, a Lich with Vamp Blade and a bunch of other crap active. It took like 10 tries for me to beat the fight without anybody dying, given that I had lost another character that up until a point in 3 had been my full-caster healer >:(.
So while the boss may be immune to Mind Affects, I can summon 100+ undead, immediately trip him, then watch as he instantly dies. A sizable dragon countered this strategy by simply burning em all away, but if it ain’t got AoE, it gonna die.