I just read a fan-made guide. I wasn't using half of the Light Alliance army's abilities (guards, crusaders, the abilities of the Luminaries and Novices to slow down the enemy by 1 turn, the griffons' dive attack, and I wasn't always using the racial ability correctly), so the Light Alliance has a lot of potential.

I haven't read any fan-made guides; based on my own observations: enhanced Luminaries at the beginning of the battle can reach an enemy standing directly opposite in one turn, but the damage is much less than if they were standing next to each other. I haven't noticed the Luminaries slowing down the opponent by 1 turn. In all battles, the computer opponent has never used the enhanced griffons' dive attack ability. I use this ability everywhere, leaving the griffons for the last turn and diving on the most clustered units, which is especially helpful when storming castles, when the computer practically groups its units together. I can hit three or four units at once. Besides healing, I sometimes use the Novices' ability against the enemy (it works on undead, orcs, and probably others).