Heroes 5.5 WarGame Edition - Tactical Edition.

Other human classes are much less suited to machines, simply because they have nothing to sacrifice.

I disagree. A Knight can sacrifice defense and gain machines. This would make the class focus on an aggressive playstyle. A Templar can sacrifice machines and gain defense.

By the way, the human racial machine (the one with a discount in the forge) is a tent.

Hmm...

Fanatics of faith don't necessarily need to be educated; in fact, faith often hinders education.

So, are they Templars or fanatics? ;) If the emphasis is on devotion in a religious sense, rather than on being clergy, then it would be better to call them fanatics, as suggested above. If the essence is in the profession, not the worldview, then education is relevant.

And of all the Wizards, the Templar is the number one candidate for lacking education.

But does he really need wizardry? He still has poor synergy with darkness and light.

And if the Templar becomes educated, then humans will immediately have 2 out of 3 educated classes (in fact, one of the core skills), and this is despite the fact that knowledge is only 10%!

That is a valid point... But we could consider removing education from the Paladin, perhaps.

By maxing out both skills and all 4 schools of magic, the Archmage can get +8/+8 to magic and knowledge for them, in addition to a wide range of spells. However, he will be without wizardry (it won't fit). Or with 3 schools with wizardry (+6/+6 from both skills).

The point is that having more than two schools of magic is pointless. It doesn't give much tactical variability or direct bonuses.
If I were playing as mages in the current state, I would 100% choose a different class. And I would have one or two magical schools and something from combat; in terms of magic, it's almost the same, with slightly lower efficiency. In everything else, the efficiency is much higher.
And if the game also retains the "arcane knowledge" skill, then the Archmage will have negative synergy with it... Which looks even stranger.
Therefore, my idea is to give the class a bonus that compensates for these shortcomings compared to other classes in the faction.

Initially, the Berserker was called the Warrior; maybe we should revert to the old name?

I support this option.

Suggest other options.

"Heretic"? "Centurion" (leader of the "legion")?

More than 3 heroes per class are definitely not planned. And even if new ones appeared, almost half of the T&E characters are female, so there should be no problems even in theory.

Okay.