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I agree with Shnurov. Some XL maps, for example, can be completed very quickly using the teleport feature (e.g., the area is blocked by terrain/a quest tower, but due to the map's landscape, you can enter it by approaching it closely from the back). I once completed one in 0 days with a 1-1-1 setup. Or, sometimes, you can "trick" the map designer's idea by using outposts, allowing you to access areas that, according to the author's intention, can only be reached after visiting a tent. Of course, none of this is a bug in the game; it's a mistake by the map designer, or rather, an oversight. These are the things that need to be "fixed" if they're going to modify an existing product, i.e., the map. :) However, for example, prohibiting certain skills or locking units like Minotaurs in a castle is not correct. Why can't I use summoned fairies to move around? What's so wrong with that? (assuming I'm not a cheater or being overly aggressive, simply using a single fairy to scout battles. But I haven't noticed such people here, and I don't think I will). Of course, if there's no other option (and there are such maps), but generally, these aren't battles with a single fairy, but with several, and there's no need to generate morale (although there are exceptions, of course). This can happen on poor maps where there's nothing on the starting location, and you simply can't fight because there's nothing to fight with, so you have to clear out hidden areas to get a decent army. But this should be prevented by simply adding some units like halberdiers, staves, etc. In this case, all players will be on equal footing in terms of not having to fight tedious battles, and everyone will save time.
Also, the map editor should thoroughly examine the map for the aforementioned loopholes and address them, rather than, conversely, making the game more difficult for players, as if "to make it more interesting." This doesn't make the game more interesting; it makes it more linear.
And there's never a good reason to ban Minotaurs because some tactics/battles can be based on them. It's not necessary to fight a battle with 1 Minotaur against a hundred ballistas, for example. You can take 10-12 of them, buff them with Bless, Fire Strike, etc., use them as cover for the hero, and then to destroy the enemy; this is just a simple example.
Necromancy is also a very useful tool, and I don't see any reason to ban it – this is, after all, a speedrun tournament, not an army-building competition. Often, you need to level up the Necromancer to the point where they can raise ghosts, which will then speed up the hero by feeding on troughs, stables, etc. As an example.
Or simply as support in battles, for example, as an alternative to fatigue.
All of the above is purely my opinion. :)
I would like a list of all the changes made by the editor to be included with the map and save file. I think this wouldn't be too difficult. :)
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By the way, just out of curiosity: why can't crystals be eaten by graves, but corpses can be used to speed up movement? Logically, either everything should be banned, or everything should be allowed. :) And since banning the use of corpses for speed is a very silly idea, I would personally allow graves to eat rubies, sapphires, etc. :) But again, this is just my subjective opinion. :)