Allow for six player games and Emperor format

One of my favorite multiplayer formats was Emperor, which had two teams of three; on each team, you had an emperor flanked by two generals and your team won by removing the enemy emperor. The format plays well with Commander or not, or even a mix (with Emperors using Commander decks and Generals using regular).

Please allow for six players instead of a max of four. The game space could scroll, or use a 3x2 configuration, to fit extra players in. Also, allow a mix of deck formats in a game, rather than everyone using commander or regular.