[tbontob]

There is the added disadvantage in that the loser cannot salvage his ego by saying the other side had the better starting position.

Another, is that the poorer player has a better chance at winning against a better planer than in a mirror universe. Assuming of course he has the better starting position and that should happen about half the time.

And map preparation is a distinct disadvantage. I imagine it would take a fair amount of work to prepare a collection of maps so as to give some uncertainty to the universe the player is playing in.

That being said, the power of the computer is in its ability to perform repetitive tasks and if we wanted to, I feel certain an algorithym could be developed to make mirror image maps.