- Spells : Dungeon level 1 monsters die rather quickly to spells, especially if you have staves with penetration
2.With axe? I go to torment and I will fight with axe as necro. And I will get corpses for my minions.
See point 1

3.Now probably every necro build = mag + vit
4.And rather should be str + vit
5.Necro is the commander on the battlefield and not an disabled mage
It is up to the players to choose how to build their characters : necromancer is just FORCED to go full vit because how the minions scale, and that erases any form of customization.
Also, AC and To Hit will be handled by DEX , while damage bonus by STR.
I also agree that Necromancer is not a "disable mage", hence these changes, in order to provide Necro with a different array of play styles.