Heroes 5.5 WarGame Edition - Tactical Edition.

Respect, good math.

I agree!!! You're looking at it from the right angle; these very thoughts inspired me to create the "unit symmetry" mod. But I decided to bring everything under one umbrella, which is practically impossible because it's necessary to consider the canonicity of the entire genre and the lore of Ashan in particular.
To prove my point:
- according to the lore of Ashan, a vampire should be a higher tier than a lich:eek:
"...The most powerful of liches receive a special blessing from the Spider Goddess. They die and are reborn, becoming "ahharus," or vampires. Vampires do not need food or water, do not sleep, and do not breathe. The Goddess's poison flows in their veins. But in order for this poison not to destroy their body from within, they need to regularly drink human blood.

There is another way to become a vampire. The most powerful and experienced necromancers can perform the "Ritual of the Night" and return a soul to the body of a recently deceased undead. But the soul must want to return, or the ahharus will become a bloodthirsty monster."

Added 2 minutes later
especially annoying is the Witch on level 6, the Hydra on level 5, the Bear on level 3, and the Centaur on level 2. You can still somehow live with the Griffin on level 4:D