As for Padavan, no offense, but it seems like you have a superficial understanding of "Heroes 3"...
Especially regarding Tazar, because when playing as ANY faction, I (and many others) would gladly take him as the main hero! (Except maybe Galtran :) ). I would probably put Kreg Hack in second place, but he's also "weak" because he's a warrior with 3 guilds in his castle:)
I VERY rarely build even the 1st guild when playing as Swamp or Stronghold.
Try to answer the question "why?" yourself...
"Сущность войны — обман. Искусный должен изображать неумелость. При готовности атаковать демонстрируй подчинение. Когда ты близок — кажись далёким, но когда ты очень далеко — притворись, будто ты рядом."