Auto-translated
What about archers? Squires usually have crossbowmen, and Minotaurs have Medusas, etc.
Archers and mages can be found anywhere. They can overwhelm a unit that's protecting the hero, for example. And if the hero goes off to fight someone else...
Yeah, honestly, it's hard to even imagine not leveling up Necromancy for a Death mage. Of course, you could then play as a Death Warrior, developing tactics. And then some kind of magic. Again, Death :)