1. Creatures also gain experience and develop. 2. In addition to the hero, who cannot be attacked, there is also a fighting unit. For some reason, these additions make the game less interesting, in my opinion. But the introduction of new skills, heroes, and, most importantly, creatures and factions makes the game much more interesting! Does anyone else think so? :)
It would also be fantastic if some creatures (at least one from each faction) could be upgraded three times in the castle, meaning you build an even more improved structure and get new creatures. For example, you could upgrade imps into devils and then into something else. Or, for the creatures from "In the Wake of Gods" for the Archangels, you could create a new building in the castle (i.e., three upgrade levels for the building)!