What if you knew everyone's hole cards?

[SossMan]

You should really think about this some more. Your win rate would go through the roof. Why would you ever have to take 55-45 advantage. You would be correct to fold AA preflop to a single all in because you acctually would (for once) be able to take advantage of low-risk opportunities later on. You would essentially never risk your chips in an all in situation that you didn't have the mortal nuts or were like 95% to win.

Also, you would be build such a huge stack early simply by taking down pots where nobody had anything that even if you got unlucky in one of your later 80-20 situations, it wouldn't be nearly enough to cripple you. You would have to be playing very badly (given the situation) or get very very unlucky to not WIN nearly every tournament you played in.