Well, on a small map, you can immediately rush to the opponent, almost like a duel. :) Basically, it's a joke.
That's a sensible idea. The only question is, what will you rush with? Take, for example, the maps Bridge (2), Island (2), and Fortress of Honor (3). The game ends in the first, at most the second week. But Infernal creatures can only get a decent army by the first day of the second week. Before that, you have to rely on Madmen and Succubi, in my opinion. There's no point in taking Cerberuses because they simply don't survive. With these units, on a difficult level, it's practically impossible to defeat strong neutral creatures. And then the lag in levels compared to a well-developed opponent starts to matter.
I played the first level of the campaign without healers.
There are some interesting things.
I'm talking about playing as the Warrior.
For the Mage, everything is clear; you can go into Earth and Darkness.
1) Reinforcements. Everything is clear here.
1a) Broodmothers have auto-reinforcements.
The campaign is a completely different matter, as is a duel. I'm talking about online play, on a difficult level (maximum resources on easy) and without dynasty weapons. And specifically, the first two weeks. Because, in my opinion, they determine the entire rest of the game. Especially on small maps.
Broodmothers are just meat. Sadists are more enjoyable. :o