FOR Ley
I might be wrong, but mid-tier heroes are much more useful for exploring territories while the main hero is away, and they need a decent-sized army to accomplish their tasks. Their skills are weak, their level isn't high, and they aren't present in every location, and their artifacts aren't top-notch. You can, of course, have Goblins attack Titans, but what's the point? We'll just give the enemy experience and lose a lot of money.
Well, everyone has their own opinion ;). You can use a hero with just one Harpy to explore the territory, for example. And regarding the hero guarding the Castle, which I wrote about, there's definitely a chance of winning! And it's not about the skills at all. But I disagree about the computer gaining experience – we attack, use an attack spell, and retreat :) and so on. What experience are you talking about? Zero? :D
Moreover, I'm not suggesting that the main hero should stay in the Castle; as a necessary condition, he should have a teleport to a level Expert city, and I consider the absence of this condition on XL maps as a loss of a queen in chess. And when capturing any Castle that can be lost, I buy back the entire army so that the enemy doesn't get anything. If the Castle needs to be abandoned, but we don't want to lose the army, then the troops are withdrawn, and only 7 of the cheapest units are left. This will allow the Towers to harass the enemy for 1-2 turns. It's a small thing, but it's nice :)
Town Portal is definitely a good thing, but what do you do if you're in a rich area with valuable artifacts that you need to bring back to the Castle? It's much simpler to have the main hero run around with a secondary hero for a while, level him up a bit, and that's it. What's the point of such a pointless plot?
But if the main hero arrives, then, of course, he can say, "Go back..." :)
Although, you can do it that way, but it's more complicated because the computer will run away even with a significant army if there's a chance of losing the hero. Blind and retreat, sometimes it works.
I disagree again – the computer never runs away if it has a superior army, never! It can't anticipate, but as soon as its army's power is significantly reduced in battle, it will naturally "make a run for it" :D