I completely agree (especially the one-shot mayhem is annoying), and I was surprised that someone thinks unicorns are weak and need to be buffed:eek: - initiative, magic defense, decent HP for their level, and also blindness. Ents are also awesome - for me, they are the best tier 6 unit in the entire game - units of this level suffer from a small increase in stats and a considerable cost, which leads to the fact that the loss of even one unit is noticeable - ents are almost invulnerable, and if you attach someone dangerous to them (for example, this same Black Dragon), then you can ignore him - after rooting, the defense is off the charts + infinite retaliation, which makes the low initiative of the ent not very important, and if you also take nymphs, then you can bring a couple of ents back from the dead. By the way, regarding fairies - the alternate form is a hundred times better than the upgraded one - symbiosis, higher damage (2-3 versus 2-2), the spells remove charm and swarm can be ignored - both spells are useless at level zero (in my mod, I gave Lay on Hands instead of symbiosis).

I cannot agree with the statement about strong ents, their survivability is impressive, but that's about it. Grabbing and binding is cool, but tier 6 is usually one of the key tiers in the army, so a passive exchange of 1 for 1 (grabbed and passively stand, both units are disabled) is not always beneficial, and it's not easy to grab more than one stack (unless it's the AI). There is no damage, no initiative, the speed is so-so (for a large creature). In RoA, if there is no money for a full buyout, ents are often not taken into the army at all, or they are taken on a residual basis (as many as there is enough money for).
However, it is possible that in a breakthrough, ents look much better than in a final battle against a live opponent.

In short, in some situations, ents are good, and in others, not very good. In other words, they are perfectly balanced. I don't think that ents need to be changed at all (personal opinion).

Regarding fairies, yes, there is an imbalance, I missed it during a quick review (in RoA, the difference is corrected not by stats, but by enhanced spells). You can go the same way, increase the spellcasting skill of remove charm and swarm by 1. This is good because the stats are not touched at all (as if there are no changes). If you go the way of improving stats, then it's more complicated. Initiative can be increased by a maximum of +1 (up to 16), because this is the limit, and this is not enough, damage cannot be increased (the alternate form specializes in damage), increasing the survivability of fairies looks about as clumsy as with Cerberuses, and touching the speed is a bad idea (it significantly changes the perception of the unit).