Heroes 5 – “A masterpiece or an unfinished product?”

Panic cannot be unfounded. Moreover, these are the largest websites, and they shape the masses' opinions about the heroes. The fact that saveheroes.org has already been visited by more than 40,000 people, and more than 2,000 signatures have been collected, is thought-provoking.
As for the voting, I'm in favor of option 3. I'd rather wait, but let it be a masterpiece. After all, can you name even one Blizzard game that was released on time? But they all became masterpieces.
As for the problems, the main problem, in my opinion, is the skills. There are outright overpowered skills and outright useless ones. Plus, the skill system, when it offers random choices... Here's an example. A Ranger can get Absolute Luck at level 5!!!! And how do you balance that? Every hit with luck is overpowered. Or Tent/Ballistics – if you get this skill, you'll be able to resurrect dragons/kill dragons, but if you don't, you'll feel like an idiot.
There is a solution, though. But then everyone will complain about it being an RPG. Namely, give players a choice of all the skills (like in Neverwinter Nights) and let the player choose what they need. Reduce the number of levels for upgrading, for example, to 20, and let them choose the most essential ones. Then the game will become very tactical. You can really assess the player's potential. If they do that, I'm all for it.
It would be good to return to the hero interface. Because the one proposed by Nival, in my opinion, is terrible. Or just remove all the buttons and assign all the controls to the mouse (again, Neverwinter Nights). I would choose the hero interface.
And, of course, increase the battlefield.
And abandon area-of-effect attacks by units. This is the worst simplification of tactics. You hit a dragon, and everyone gets roasted. You need to distribute damage with your troops wisely, and not suffer with this nonsense.
Remove the racial special abilities, except for necromancy. It turned out to be nonsense. There are special abilities, but the magic of the races is the same. It's stupid.