Hero engineers.

How should a Machine Guild hero develop? There are only three skill trees available. You can take abilities for all three machines, and the hero will become a jack-of-all-trades, but ultimately weak. Regarding the machines individually: the tent, while being a good support, doesn't heal very well, and the plague tent is just nonsense, IMHO. The ballista is definitely the most useful; it can replace archers in the army in the early stages of the game. But there's also the catapult, and attempting to storm a castle without its skill is practically suicide. Of course, this doesn't help much (my catapult, for example, only shoots where it's supposed to half the time :confused:), but it's even worse with an "untrained" catapult... So, should you develop along the lines of ballista - improved ballista - catapult? What about the enchanted ballista? What about earthquake? What about steal? What should you do with them?