Homm5 Skill School

Comrades, many people talk about creating hero scouts, "tank" units, and so on, but at least a hero scout will survive until the first encounter with a decent enemy hero. After that, the scout will either have to flee, resulting in a ransom in the tavern, or a new one will have to be hired. Is such a use of heroes rational in terms of money? If I'm wrong about the way scouting is used, please correct me.

Why go looking for trouble? Scout, see the enemy main hero, and retreat. "Tanks" are also needed for building chains and transferring troops: it's extremely unpleasant when the main hero has to return to the city once a week. Do such heroes need to be heavily upgraded? No. Let them grab some skill from a witch and that's enough. But don't forget that people usually upgrade a secondary hero in addition to the main hero (not a scout, but a secondary hero who has some troops and speeds up the clearing of territories), and sometimes even have to declare the secondary hero as the main one (if a good skill appears, but not on the main hero). Although, I must admit, I don't do that, because it makes it more difficult to meet the time limit.