New units. Their discussion and selection of upgrades.

The question is this: which upgrades and for which creatures in the Castle of the Light Elves do you choose? Please, in advance, just the type of upgrade and the justification. Please, no off-topic discussions. For example:

Nymphs, because...
Wind Dancers, because...

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Out of the two upgrades, I choose....
-Nymphs, because they heal themselves and the Ents, and the Aspen Swarm for the Dryads does not compensate for this ability.
-Wind Dancers because they have more attack and defense.
-Forest Archers. Because they have no range penalty and higher initiative than the Bow Masters. And if the hero is Ossir, his archers solve everything)). I only take Bow Masters when there is the Unicorn Horn Bow artifact.
-High Druids, because they have the Lightning Wall spell and more defense than the Elder Druids. On fast maps, when the armies are small, High Druids deal good damage with the spell.
-Unicorns, depending on the circumstances.
-Ancient Ents, because they have more defense and hit points.
-Emerald Dragons, because they deal damage not only to the target but also to the creature standing behind it.