Moderated: OFF-TOPIC in the message
I wouldn't like to see various upgrades and alt-upgrades.Firstly, because the names of these very upgrades often sound absurd.
and secondly, sometimes it's annoying that after building, you also have to upgrade the unit because otherwise it will be weak and useless. Accordingly, it will take longer to develop, and so on.
I also don't want to see a large number of factions in the 6th part. 6-8 is quite enough. And most importantly, they should be unique. Their own magic, their own tactics, units selected to match the magic, and so on.
Regarding graphics... well, of course, I want something beautiful, but I don't want something too beautiful, because Heroes isn't a game you should just admire, and it would be a shame if it was too demanding and few people could play it.
About skills:
Perhaps what I personally like very much in the 5th part is the skill system. All the different branches and so on. By the way, it's a pity that in 3.0, for example, compared to 1.0, there are fewer unique racial skills.
And all sorts of resource editors, unit editors, faction editors are not needed at all. This is a frivolous thing, it's not needed in Heroes.
That's all, IMHO

Барон "Vampires"
Отдай свои прошлые сны,
В сомненьях себя обрети,
В бешеном танце душа кружится!
Не думай, что будет потом,
Здесь и сейчас мы живем,
Стань хоть на миг сам собой, слышишь!