It's your decision, but to be fair, almost everyone here plays against the AI. Play it, give it a try...
Regarding "Invasion from the Underworld," it's already been said: the map is unplayable. There are too many effects that cause lag, and saves don't work. I'll also add that the starting conditions are difficult: you get a hero without an army, and there are many high-level enemies around that are difficult to defeat even on "Recruit" difficulty.
"Dragon Utopia" was generally enjoyable, but the map is a bit empty. Transitions between locations are abrupt, and there are unclaimed relics lying around. But there's a mod and a storyline, which make the map more interesting. However, dragons are a difficult challenge for an unprepared hero. The first time I ventured into the Dungeon (or rather, the over-dungeon), I couldn't find my way back. Because of this, I suggest the author remove the script that prevents the hero from returning. Do this, fill the area with decorations, and you'll have a very good map.
"Whispers of Death" seemed the most well-developed to me. The populated part of the surface looks nice, and thanks to the resource scripts and the four levels built in the city, the game turned out to be interesting and dynamic. There are even quests: two reward artifacts could have helped in the decisive battle, but I completed it earlier. There are also drawbacks: the Dungeon is empty and geometrically correct, empty areas of the surface are visible, and you can teleport to them using "Astral Gates." This should be fixed: add spikes or ban the spell. I don't understand why there's an Orcish city in the center of the map that doesn't provide any bonuses. Based on the map's backstory, it would be more logical if there were a Dwarven Fortress there. In addition, random cities can seriously disrupt the balance: in my game, the cities didn't match the players' factions, but if one of them does and the other doesn't, then one player will receive a double bonus from the first week, gaining an absolute advantage over their opponent. I would remove the second cities if it's not possible to make them always match the faction of the player who owns the first city.
Цикл "Закадычные враги": "Особенное гостеприимство, "Супероружие", "Меж молотом и наковальней"
"Падение Шантири"
Кампания для "Кодекса Войны"
"Выбор Сагиттеля"