Judging by your comments, it seems you don't quite understand how difficult it is for the Necromancers to defeat powerful factions that have anti-magic abilities, such as Dwarves or Haven. It's not just about mind control; it's about all magic in general. I'm talking about Berserk, Blind, or at least Plague. So, Froska, you need to play against worthy opponents first, and then draw conclusions.
Reading your comments, it seems like you think the Necromancers were unfairly weakened. And that Necromancers should be the strongest and most powerful... the conclusion is clear.
Consider this: some factions are weaker than Necromancers, and some are stronger. And just because it's difficult to play against a particular opponent doesn't mean that Necromancers are weak. Just look at the Princes. The second-tier Necromancer units were already buffed; the only thing I'd like to add is: why didn't they buff the old ones as well? I'd like to see even two vertical upgrade levels in the sixth game, and each with a horizontal one. So that the second vertical upgrade of a first-level creature would be stronger than the upgraded second-level creature!
In my opinion, that would be much more interesting
