....In the tavern of the archer, a doppelganger appeared; I don't remember his name, it seems like Waishan))) .....

That's right, he appeared for me right away, and there was no choice (I urgently needed a second hero) - I had to hire him, and then I kept getting them mixed up throughout the game.

Regarding the death of the main hero - I also agree (although I didn't check - I kept him in a secondary role - I developed his logistics to the maximum and used him as a support hero), but ideally, they should force the final victory to be achieved by the main hero - after all, this is the leitmotif of the game: "liberating the homeland is a sacred duty even for scoundrels," and doing it with other people's hands is bad form.

And it would also be desirable to give only one attempt to win, for example - I killed the ghost (with the hands of the rogue Letus) without risking anything - I knew for sure that if it didn't work out, I would run away with the rogue and in a couple of days I would return with him, with an army that wasn't as strong as the first, but still numerous enough, and easily finish off the ghost with my magic (they were already gathered and standing nearby in the castle of mages).

If the author fixes these shortcomings and makes the opening and ending cutscenes + adds a couple of videos during the game, the map, in my opinion, will be no worse than the real Heroes maps.

As for the Necromancers - it takes more than a month to develop their cities and gather enough troops, so in my opinion, it is more promising to play with the starting faction, especially since the Dark Elves have offensive potential no worse than the Necromancers.