If you allow the watcher to see what the players see, they can not only help remember for one of the players, they can also track the pieces themselves and work back to the original setup. If you're really a nerd with a lot of time on your hands.... I'm just sayin'....
That being said, personally I'm not for forcing anything on or off. This would be my proposal:
If a game is publicly viewable, there would be sub options:
1) Secure - this is basically as it is today.
2) Player View - this would let watchers see whatever the players see when a piece is revealed publicly, would use aids & RV if those are enabled, not if not.
3) Enhanced View - this is basically player view, but with RV & GA always turned on for watchers whether players have them or not
4) Complete View - the watchers would see essentially as if the game had the Complete Visibility option on, and would get GA (RV becomes meaningless in a CV situation). The players would see whatever the game options are.
I'd suggest the default would probably be either #2 or #3.
If a game is permission viewable, the above option would also be set, and anyone allowed to watch would get whatever it was set to. (As a side question, do we want permission viewable to be implemented? Is it worth it? Would people use this?)
If a game is not viewable, obviously no watches period.
How's that sound? Would it make people happy to have those choices and keep noobs around the site? I think the answer is probably yes.