Determinism means you will never lose. Didn't you notice that playing through this game?
My first try I got to the last fight without once having to do any in combat healing. All healing was done with the bedroll after the fight.
It's completely silly how easy it makes the game. You always know exactly what will happen and that means you would have to intentionally screw up to lose a fight.
That's not what determinism means.
What are you actually criticizing? The system mechanics or the way the current mobs and abilities are balanced? There's actually a difference.
Guaranteed CC success is what is wrong with the current system.
Once they have no Magic Amrour, or no Physical Armour for physical CC, your skills have 100% success. That is what makes it silly easy.
A game with no challenge, and that is what you will have when CC is guaranteed, is going to be very boring.
One of the most liked things about DOS1 was that it actually provided a challenge.
