They will likely bring back the classic Knights/Cavalry - Champions.
I think it's a flaw of the developers. It seems there is also an Archmage skill (I don't remember, it's been a while since I played), even though there is a unit with the same name.
As for me, there is no flaw. One doesn't interfere with the other :).
Цикл "Закадычные враги": "Особенное гостеприимство, "Супероружие", "Меж молотом и наковальней"
"Падение Шантири"
Кампания для "Кодекса Войны"
"Выбор Сагиттеля"