If a Player Leaves, Allow a Human to Replace their Bot after 3 Rounds
Lots of people don't want to play against bots (because they don't know what they're doing). But human players often leave a game for one reason or another.
To solve this, if the human who originally had a position in a game does not return after 3 rounds of absence, allow a human to take the position of a bot in a game if that position was originally held by a human. This both gives time for them to return if their connection dropped out and means the other players can still play an all-human game for the majority of the game.