Dragons of the world of Ashan.

Yes, that’s what balance looks like – they made all the units equally strong, but forgot about level 8. It doesn’t necessarily have to be dragons, but they would look very impressive.
Also, they somehow nerfed the Dungeon faction. They started to make the Dungeon units worse than they were in Heroes 3. And that’s a shame...

Maybe suggest a Dragon King that occupies 3x3 or 4x4 squares, has about 2,000 hit points, and deals good damage. Such a battle would be memorable for the whole game. Even if you can’t buy them, you still need to fight someone... And after level 18, the hero easily defeats level 7 units and there’s no one to test his heroic strength against...