Thank you for your ideas.
If you notice there are 2 more pass & play modes in the development right now (car mode and tabletop mode). I think they will make you happy once they are released.
May I know in further versions if AI can be added into the online or pass&play model?
Furthermore, I noticed that in existing version, when a player leaves play, the AI substitution varies -- sometimes easy AI, sometime hard AI. Is it decided by the level of the player who leaved play?