I never said there was anything wrong with the fighter being a simple class.First, there's nothing wrong with the fighter being the simple class. That's the role it has always had. If you want an unsimplified fighter, pick a subclass to do it. Battle Masters and Eldritch Knights are two fighters that are not simple.
I said trying to make the fighter both a simple class and a complex class at the same time is bad design. It's doom to failure unless you are willing to completely open yourself up to possibilities which the designers weren't because they had a traditional design paradigm to follow.
The Battlemaster is still simple and unsatisfactory to those who want complex fighting because the Fighter the designers put the power elsewhere.
The EK doesn't do complex "fighting".
It's a bad game design. Better objective game design would be to have the fighter be simple and another class complex.
Adventurer Category of Classes.Second, why would you replace a broad class with an even broader adventurer class? Especially when a class named adventurer would cause confusion since every PC is an adventurer.
The classes are Brute, Healer, and Warmages/Blaster.