Dryad - Fairy (no alternative!)

Nothing can compare to it!

1. Dryad - Fairy (no alternative!)
2. Ent - Dendroid
2, alternative - Earth Elemental - Stone Elemental
3. Cadet - Archer
3, alternative - Air Elemental - Hurricane Elemental
4. Pegasus - Pegasus Leader
4, alternative - Water Elemental - Storm Elemental
5 - Leprechaun - Lord of Luck
5, alternative - Fire Elemental - Energy Elemental
6 - Druid - Elementalist
6, alternative - Chrononaut - Time Lord
7 - Mantis - Mantis
7, alternative - Phoenix - Sacred Phoenix

And that's how it will be! Why should the developers do extra work?! Elementals have already been made, and the water elemental, by the way, duplicates a unit from Sanctuary, but who cares, and a phoenix has been made))) And the elves will immediately have top-tier magic. Fire, water, earth, and air spells, otherwise how else would you summon elementals?

Ice Giant - Ice Giant

And in the description it will say - doesn't live long. Like the Lamassu. Well, it's hot... it melts quickly.

Beast - Fury

Poor, gray-skinned harpy will no longer serve the Barbarians:(

Assassin - Assassin Leader

Really, the leader himself? O_o A boss for the base?

Manticore - Scorpicore

No, they won't make a Lamassu out of that! What are you talking about?

Heretic - Dread Heretic

No comment here:D

Beholder - Evil Eye

As Ple-Sen rightly pointed out.

I think it will be:
Black Dragon - Black Dragon

Druid - Elementalist

This is especially pleasing with its logic! If there are so many elementals in the Castle, then the hero cannot naturally be an Elementalist! Otherwise, they will accuse them of being too similar!

If we talk about the essentials, the main thing is to add simultaneous turns and a good map generator. If it's not in the patches, then it must definitely be in the add-on!
As for the races, I don't even know... I can't even imagine how to harmoniously implement Mages and Tower factions with the current magic system. Either they will be useless, or overpowered.
It seems easier with the Wood Elves, like with some kind of gnomes.
In general, I would like to see only one race, so that there would be a set of 6, and a good game balance.