Slayer of the Summoner

I have to disagree here. I consider defense/attack to be essential skills for everyone. With two native archers, ranged attack isn't the worst thing either; at least it's better than pathfinding. Leadership can also be taken, but with Mana Vortex, I don't think intelligence is particularly useful. Tactics are undoubtedly essential.

For the dungeon, ranged attack is useless because you can simply calculate the damage. Let's take Medusas: 8 of them, and multiply that by their damage of 5-8. We look at the attack value of 10, and we get 40-64 hits, without considering defense/attack skills. Add 50% of the maximum archer skill, and we get a DPS of 60-96 hit points. But you still have to level up ranged attack, sacrificing potentially crucial skills like earth magic, wisdom, tactics, defense, or logistics, among others. Let's take Eyeballs: 14 of them, dealing 3-5 damage, with the same attack value. DPS = 42-70 hits, respectively, which is better than the weak Medusas. Now, let's remember that both warriors have no penalty for melee combat, and with a speed of 6 and 7, what's the probability that they will shoot first without the acceleration from an Air Master? The answer is more rhetorical. Now, here's a question: what will happen to the DPS if we remember that the penalty for distance is 50% damage? The conclusion is obvious. Shooting with archers is undoubtedly great, especially against neutrals, but in battles against heroes, melee units are what decide the outcome.
Regarding intelligence... what can you use to adequately replace the doubled mana of a good mage? You cast 4 Dimension Door spells, several Portals, and Fly, but you won't be able to attack or resurrect with magic anymore? Unless it's just for Slow and Shield :) Or are you going to spend every day after a battle sitting in the castle to restore mana, or flying to the mana well? :)