For example, it would be nice to create a special ability for Adelaide, such as the "Ring of Cold," similar to the elementalists, with doubled damage. Or, for Adrian, a "Fire Magic" specialization that increases the power of fire spells by 25%.
By the way, the map "Rebellion of Wizards" is quite good. The only thing is that the neutral monsters are a bit weak, and it becomes challenging to play even on the "Elephant" difficulty level. Also, events like "the forest arrived, you were robbed" become annoying during the game. Otherwise, the map is excellent...