'Substitute' AI should be Hard (at least)
It really makes no sense that you get 'Normal' AI when someone drops, or when you start the game in Pantheon without enough players. The 'Normal' AI is already penalized by getting less gold or experience compared to a player. AI will never be as good as a player anyway, to compound it with a tangible penalty is insane.
Since 'Hard' AI is the first AI to have no tangible penalties, it should be the 'default' AI used when someone drops or when you need a sub in Pantheon. This really needs to change.