Morale can be ignored. I've won many battles without morale, and some even with negative morale, when there's a lack of leadership. But it seems there's no escaping the need to acquire resistances. Enemy heroes mostly rely on offensive magic, and minimizing losses through resistances seems quite appropriate here. Of course, you can launch the AI into your own castles before a battle so they can learn some earthquake or slow spells, and not just rely on lightning or meteor showers.

Honestly, I didn't expect such a buzz to be generated around this map. I tried playing it out of curiosity and started a rather slow discussion in a completely different thread. I thought I'd exchange a couple of comments with Marlo and that would be it. But it all turned into such a frenzy that some people are even considering replaying it, others are thinking about conducting some experiments, and some are planning to speedrun it. In a way, I'm starting to feel like a provocateur. It's up to you, of course, but is it worth spending so much time and effort on this?