What is your opinion about Heroes IV?

Maybe I'm reinventing the wheel here, but I've noticed that those who started the Heroes of Might and Magic series with the 4th installment have a very positive opinion of it. And those who played the 3rd installment with great enthusiasm before that are the ones who criticize it. Although, personally, I started with Heroes of Might and Magic 3, or even Heroes of Might and Magic 2 (my father played it, and I just watched), and that's fine, the 4th installment is great! Only the castles don't appeal to me from the inside, but otherwise, everything is good!)))

P.S. An old joke from Koshi)))