Gameplay shouldn't be made easier; Heroes is not a game for preschool-aged children.
When attacking this hero and destroying them, 2500 gold was almost wasted. There is also another BIG downside in III. The army cannot be separated from the hero.
For example: you bought an army in the Castle, but there's no money for a hero. And it is absolutely necessary on that specific day. So what happens in the end? I believe this is a kind of bug in the game.
A forum is exactly where disputes happen; if everyone were silent and agreed with each other, it wouldn't be a forum, but a smoking room :)