Hero without an army.

No, it’s still a useful feature for improving commanders... For example, I’m playing as Stronghold and leveling up the commander with attack, health, strength, and damage skills, and he alone can defeat huge armies, and artillery with a bunch of ballistae is just devastating... But if you don’t level up a warrior, then the commander is weak and useless in battle... So, saying that it’s not interesting to run around with one commander isn’t entirely correct.