It's pointless to talk to Celt, you don't argue, you just keep repeating your "truth." The plagiarism was from Disciples, Age of Wonders, and a couple of other good games... I meant that Heroes has always had its own unique gameplay, as it founded the genre itself, and in the 4th installment, this gameplay was not just changed, but actually stolen.
I played it a lot, and it's not that bad, but it's a completely separate game (not Heroes), and as a continuation, it's a failure.