What is your opinion about Heroes IV?

At the same time, the game turned out to be much more complex and deeper than the other parts,

than all the previous parts, because the fifth installment is largely an evolution of the fourth, which, for commercial reasons, was disguised as a "third installment with a twist." The fourth game was the first in the series to feature a well-structured and adequate magic system; finally, the units had their special abilities properly developed, which made the combat part of the game more complex. All of this was later incorporated into Heroes 5.

which, on the one hand, is good, but on the other hand, it scares away newcomers and increases the game time.

Besides the 1.0 patch and the game's overall difficulty, I would also note the mediocre set of standard maps, but at the same time, the campaigns are quite decent. A paradox.