Harmony - Troop Symmetry

Well, you can change the stats...

and then what? Change the race skill? It's designed for magic damage for the Elves, not for demons. Demons are warriors... or something. Anyway, regarding the demons - don't ask me. I don't play them (I just don't like them because their imps burn all the mana at the start of the battle, regardless of what your hero is. There are always so many of them that all the mana is drained).

And in your opinion, is True Luck and Absolute Protection a weak skill??? - ideally, the value of Special Abilities should be balanced.

You need to look at the whole picture. For example, in general terms, the Dwarves (I don't have time to go into details right now).
1. What do the Dwarves study for "Absolute Protection":
"Protection", "Summoning", "Fire".
2. Their troops (parameters, skills)
3. Availability of artifacts.
4. Enemy hero's specialties.

So: which two skills will the Dwarves choose?
If there is a Necromancer on the map... Let's say "Light" + "Leadership".
Necromancer skills: "Summoning", "Darkness", "Education", "Light", "Magic".
And if, in addition, if you dress in full Morale, you will get hit by "Blind" and subsequent debuffs on it, and Morale will still be +/- 1 (depending on which second ring the Necromancer chooses).
The Necromancer has 2 Special Abilities :) - "Horror Scream" and Zoltan. 50% block of spell removal, twice as much mana as the Dwarf, even without a link, and +>15 stats.
The Necromancer's set in two slots gives -40% initiative to the Dwarves (blocked by rings), minus 1 speed (not blocked, as you probably can't wear +1 speed boots - immunity to slow is more important).
And, of course, the Necromancer's set (2 slots) saves 50% of the hero's movement points + 30% movement points from Magic on Blind.
Without leveling up the "Morale" skill and dressing in Morale, the Dwarves cannot - because prolonging the battle, missing turns (and -20% attack/defense) against a stronger mage is not good.
And without "Light"... mass +12 parameters, blessing, curse, and the inability to remove Blind...

In general, this needs to be done by sitting down, writing out the balance of everything, and thinking for a long, long time...

And without this, I wouldn't cut skills. For example, the Human Special Abilities are completely useless - I changed them. They were created back in the days of the first version of Heroes 5, and if you remember, there weren't things like troop training limits back then - so people didn't choose Special Abilities. Afterwards, I think a lot wasn't revised. Skills like "Master of the Dead" used to be skills, but now they are ~not. If it gave 50 Dark Energy instead of just meaningless 5%, it would be a skill.


P.S. I completely forgot: "Vampirism" is something that a warrior needs, even if the 7th level opponent has 50% damage (and even then, in 50% of cases, with 5 luck).