Secondary skills in Heroes 3.

If we think abstractly, without focusing on anything specific, then all skills are good in their own way. That is, there is no worst or best skill. Everything depends on the specific circumstances – the map, who you are playing against, whether it’s about the main hero or a secondary one, and so on. For example, no one would choose the Estate skill for the main hero, but a secondary hero would definitely take it – so is this skill good or bad?:D :D :D
Therefore, we can only discuss what is good and what is bad based on specific examples.