The game currently only supports AI for Master Duels (as far as I can tell). I’d really like to see other formats supported (most especially Enki duels as I have had a lot of trouble finding interested opponents).
In addition, there’s no way in the game right now to find out what all the many formats actually DO. It would be great if there was a way (perhaps hovering over the option, or just a section of the program where we could see the rules for the various modes). It might encourage people to play something other than just Master.