I've been following some games by other players and find it disconcerting that the viewpoint changes on each move. While plenty of watchers may like this change of perspective, I find, when looking for anticipated moves and patterns on the board, that I have to shift it all around in my head before my mental map matches the board.

It would be great if one of the User Preferences could be to maintain a static viewpoint when watching a game, and have a Rotate-Board (or Swap Players or some such) button on the page to show the alternate view. (Once swapped the viewpoint would thereafter be from that player's perspective.)