Heroes 5.5 WarGame Edition - Tactical Edition.

Is this a criticism of my build? Could you be more specific? I am ready to discuss any branches and perks.

This is a criticism of any build.

Specifically, in yours:
The Devilish Strike branch in attack. Weakness competes with Stun, and you can upgrade both (different types, but in the same line).

And why isn't Fallen placed after Pain Lord (who relies more on magic)?

Readiness and Solid Defense. Here, Readiness depends on Solid Defense, as one enhances the other. And Readiness requires level 3.
etc.

Added 2 minutes ago

Perhaps, in your binary build, what bothers me most is the idea of overloaded perks, where too much weight is placed on certain basic perks (4+ perks). This means that this perk must be taken as a mandatory one, not because of its useful properties.

Therefore, the branches should be as logical as possible, so that the basic perk enhances the subsequent ones.

Added 2 minutes ago
By the way, Barbarian Luck was conceived by me as an increase in attack for each unit of luck by 1, so Elven follows it.

Added 1 minute ago
Unfortunately, the reality is that it is difficult to strive for the ideal.)