The Hero's Path

What is the principle behind creature growth? In month 13, I was planning to have the final battle with ancient Ents from the Fortress faction, but when I got to the recruitment building, there were only 31 of them. There are twice as many Paladins. Maybe we could add a quest that increases the number of selected creatures? Otherwise, you have a million gold, but nowhere to spend it. P.S. Is it possible to make the quest for the Boots of Traveling available earlier? Otherwise, by the time the Orc clears all the trees, you'll have already completed half the map.