In my opinion, the fairy upgrade is nonsense, and nobody would have done it in the first week, even if it were allowed.
Is it a 200% game?
That's essentially the same as not building birds. And even if the 2nd level is built, Citadel is better than the fairy upgrade.
But what if it turns out that birds can't be built? From 114-5 you can upgrade fairies and gain an advantage.
Without oil, they can't really break through anything properly, and with oil, you'll manage even without them.
Yeah, right :D
And the opponent will crush these fairies in battle without even noticing.
Vampire Lords aren't a stack of Archangels in battle either. But they are very dangerous precisely on the map itself, even though they are undeniably good in battle.
За то что нейтралы не бегают за единичкой, для меня это уже стоит того