Skills and Super Ability of the Orcs.

Wouldn't your rage deplete too quickly?
After all, on the one hand, you simplify the task of recruiting units, but on the other hand, you also make things easier for your opponent. After all, it's much harder to eliminate a stack of units that are under the effect of rage, especially if they are Cyclops, leaders, or warmongers.

In my opinion, the Education skill isn't appealing at all; what's useful about it?

I agree about the skill that Nazgul takes; it's not needed. And I disagree that Education isn't useful. After all, higher education provides a 15% experience bonus, which allows you to level up faster and gain the necessary levels and new skills. Secondly, higher education grants +1 to one of the hero's primary skills for every two levels, which gives you an advantage over your opponent. Therefore, take Higher Education as soon as possible; it's both beneficial and makes the game easier.