Auto-translated
I played Heroes 5 and realized that Nival either lacks creativity or is being pressured by the publishers (which is understandable, as publishers want something similar to the previous installments). The factions are so similar to those from the third part (although the Dark Elves are an exception; they resemble the Fortress faction), that it's surprising. In my opinion, Heroes 5 is a reinterpretation of the third game.
The racial aspect only confirms this statement.