But the current schedule format is perfect as-is. It is very precise and easy to determine year-by-year outside of the home/away part. How do they decide the matchups for the extra game? Would make more sense to me to make a preseason game international.
Or, maybe keep the 16 and just have every other year be home. So the same 16 teams get home international games in even years and the other 16 get home in odd years.
Or, better yet, stop doing international games.