In your opinion, which hero has the most charisma in the campaign?

I don't usually enjoy campaigns that much; I prefer larger maps or a good opponent. It's a shame that the AI isn't the best option here... but it depends on the situation. And you don't really get to experience all the features of a particular faction in a campaign... I personally prefer to play with three factions, the others don't appeal to me as much, although in the third game, it doesn't really matter which faction you play as.