But this is simply a problem with the 2D screen, which doesn't quite harmonize with a full-fledged 3D game.

I wouldn't say so. If you initially create all objects in 3D and then convert them to 2D, as was done in the third and fourth games, the result will be good. Here, they simply hired very, very bad artists who created screens from their drawings, diluted with extremely poor effects. Just look at the streams in the Academy. There's no need to even talk about shadows, proportions, and the correctness of lines.

It resembles Heroes of Might and Magic VI. Well, it's hard to say... Might and Magic X was a direct copy of the sixth game. But why is Heroes 7 like that? Is it because of the 3D landscape? What kind of landscape should it be, a flat one? The models, heroes, and units look completely different; the overall atmosphere is different. There are no silly blur effects or other nonsense. They tried to import vampires and liches from the previous game, but the fans revolted and stopped them, so it didn't happen. So, honestly, I don't see any copies.

For Humans: the pikeman, crossbowman, cavalier, angel, sister, and catapult are based on old models; only the textures are completely new.
For Mages: the djinn is made from a water elemental.
For Necromancers: the skeleton, ghost, lamassu, and dragon are similar to the situation with the Humans. The reaper was made from a hero.
Neutrals: elementals and griffins have, of course, changed significantly.
Objects on the adventure map: forges, stables, crystals, portals, passages to dungeons. Maybe something else.
A lot of icons taken from the sixth game.
The structure of the interface in some windows is again a copy of the sixth game, with only minor changes.
There are too many borrowings for a price point of 1600 rubles.