I can suggest ways they could have the game "play larger" by a little without needing to redo fields: Allow possession of the ball to be gained by a player in the air, without regard to where he lands. Then it'd be all about where he previously stepped. An add'l possibility would be to allow players to bat the ball while touching out of bounds; then it'd have to be about where the ball was, as in Rugby Union, so you'd need a view down the sideline.
Or you could go more radical and say a player's not out of bounds until both feet are touching ground beyond a boundary. Or you could have a "supporting points" standard as in wrestling.
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