Actually, it turned out very colorful... the armor could be made simpler—plates instead of a carapace—remove helmets from the entire line and give them to the shooters/guards, and put caps on them like here

I want to bring the general style closer to the Renaissance
I also really want heavy halberdiers, a dwarven analogue of landsknechts

For the fourth level, I want to put HUMAN MERCENARIES from allied countries
If all dwarves are armored and slow, then humans are fast and damage-dealing