Harmony - Troop Symmetry

We won't reach the final version without testing.
And the sooner they start... the easier it will be to understand how to proceed.

Regarding balance:
Currently, I believe it's correct to limit a character to learning a maximum of one school of magic.

No, I completely disagree with that. There was an idea to give everyone different resistances, but it didn't work out (for example, mages wouldn't have any resistances, while orcs would have all of them, and others would have different ones, for example, High Elves would have light resistance, Necromancers, Demons would have light resistance, Humans would have chaos and darkness resistance, Dark Elves would have darkness resistance, and so on in that vein).