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I'll share my opinion as well (and I'll say right away to everyone who wants to argue – I've played Warlords for a very long time and know all its nuances):
1) Those who like Warlords justify the lack of morale by saying that it allows you to better show whose skill is higher in battle, as only skill affects the course of the battle, not chance. BUT, in reality, skill is needed to anticipate the possible morale of the AI in the upcoming battle and build the battle around that – and that's more complex. In Warlords, without morale, battles require much more mindless grinding than skill.
2) Now about experience. It's an interesting thing, especially at the beginning. However, after some time, you realize that it's not needed for hero units, as battles become simpler and the excitement of battles is lost. In SoD, whether it's the first week or the fourth, if you're fighting a series of battles, you need constant control and attention. In Warlords, thanks to experience, in the second week, almost any unit can perform miracles, and skill is not needed here, not to mention later stages. The only plus is that the game speeds up, i.e., it progresses faster than in SoD.
Warlords has many useful features (such as the ability to customize the global map, the ability to ban artifacts, etc.), but the 2 points mentioned above are no longer a game of heroes; it's just Warlords, and you shouldn't confuse them. It was because of these 2 points that I switched back to SoD; the game is much more interesting with morale and without experience.