If you think that the third installment was made "with heart, so that players would enjoy the game, and everything is for the customer," then you clearly don't know the developers.

Don't mix everything together. Of course, no one will give away the game for free later. But there is a big difference in HOW this game is made. Let's step away from Heroes and take, for example, The Witcher. Well, there's just a world of difference between the first and second parts. The first was made thoughtfully, you could say with heart, while the second largely succeeded thanks to the reputation of the first part. In essence, the second part is no longer a masterpiece like the first, but just an ordinary mediocre RPG, where the only major plus is the beautiful graphics.

The same thing happened with the sixth installment. The fifth installment wasn't a masterpiece either, but it was polished to a good level, and it became popular. And then the sixth installment comes out, bursting with gift, collector's, and other versions, literally shouting about all sorts of goodies in the form of albums, models, and other nonsense.
But what's inside? Everywhere you look, there are bugs. And serious ones, as if they gave us version 0.99 and said, "Here, play it and then tell us what's bad, and we might fix it."
Why release a beta version then? Why organize some kind of testing? But obvious things remained. Why? Because people are already hyped up by the bright pictures and will buy it anyway! Why bother?

The game has found and will continue to find its players and fans, don't worry ;)

Otherwise, it would have completely failed. But for now, it's still afloat.
No, there are, of course, some pluses. Sanctuary is beautifully made, taking cover behind obstacles gives a bonus to defense, and you can bash the gates again.
There are also controversial moments, such as constant attacks on multiple stacks at once, as if they are all cyclops from the fifth installment, an unclear tactical arrangement of troops (if there is no skill), a bunch of abilities for each creature, etc. There is still something to look at, but this "something" still cannot outweigh all the obvious objective flaws of the game.