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Yes, indeed! Some players want only dragons, while others are tired of them. Frankly, I'm against multi-tiered upgrades. As practice shows (WoG, and even in the regular Heroes games), every player wants to have the maximum upgrade. Unimproved creatures, and in WoG – intermediate tiers, become useless. In Heroes 5, a rather interesting balance improvement was made. In Heroes 3, level 7 creatures were too powerful. As a result, many players believed that it was more effective to have a mixed army of level 7 creatures than an army of their own castle's creatures – and that's not good. Whereas in Heroes 5, this is debatable, as level 7 creatures are weakened, and there are no mega-creatures.
I remember the Kings. In the lore, dragons were too strong – as a result, at the end of the game, players' armies consisted of only dragons. In Tribes of the East, this was corrected by slightly improving the stats of the creatures and adding new abilities, resulting in a less obvious choice – whether it's better to take dragons with their 700-800 health and 100-120 attack, or creatures with much more modest stats but possessing much more outstanding abilities. And the fans were grateful, as they were tired of dragon armies.
In the third game, we had a similar situation to that in the Kings. The only limiting factor in Heroes is the creature growth rate. And here, you need to be much more careful with the stats.
Another problem with incorporating mega-neutrals is the world's history itself. Azure dragons simply don't fit into it.
By the way, the fans' position on this is ambiguous. While some dream of the return of azure dragons, others say: "The black dragon should be the most fearsome unit."
And it all started with this. In the first part, there was a Dragon. Just a Dragon. Without any black, green, or red. In the second game, upgrades first appeared. Now there was a green dragon, which upgraded to a red one, which, in turn, upgraded to a black one. The necromancers also had their own dragon – a bone dragon. Then, in the third game, the green dragon went to the elves and upgraded to a golden one. Then there was the Blade of Armageddon, which gave us all this variety. In the fourth game, there were 3 dragons – a magic dragon, a black dragon, and a bone dragon. Then, we were given, believe it or not, Mega Dragons.
Initially, the fifth game was supposed to return to the ideals of the second game. Dragons should have been only in the Dungeon and Necropolis, but then they decided to make phoenixes neutral, removing them from the elves' castle, and instead, as in the third game, they made green ones, which in the beta upgraded to golden ones, and in the original – to emerald ones. Then, the dwarves were added with their fire dragons. Then came "Tribes of the East," which added alternate upgrades. Next, there was supposed to be a third add-on with a Naga castle, which could also have dragons, designed in an eastern style. At least, in the sketches, their figures are present, integrated into the architecture of the castle.