2Kitty
1) Yes, I often use the ability of the Knight Isabel... when playing against Elves, it can deal damage even to the Archers (it can even deal half of the damage from its attack, which can wipe out the entire unit)... Paladins deal 20-30 damage, and High Elves deal 25-35 damage. Considering that they receive a bonus for moving, these 5 points will turn into much greater damage.
2) When 10 Seraphs with Divine Vengeance wipe out 87 Succubi, that's just ridiculous...
3) I agree about the style... but even if it's weakened, Vampirism at level 7 is an imbalance. Is there a difference between 3 Seraphs being resurrected or 30 Vampires?