[Orpheus]

I just thought of another difference to consider:

if you know the board, you become well-nigh unreadable. No one can ever put you on a specific hand. YOU might be playing the 46u that would happen to make a nut straight (no one else would!) or you might be doing one of your fishy fool hands (which they don't know are an act) or you might be bored ang gambooling with a bluf (really: you have a significant advantage, but not a lock, so they'll sometimes see you lose these hands)

If you know your opponents' hands, you simply have a perfect read on the other hands, which only complicates the ability of the other players to read your range of hands modestly.

Again, just tossing ideas into the mix.