For Christmas or birthdays, it would be great if you as the customer could give permission for your wishlist to be viewed by other people.

You could select the people who are allowed to view your wish list ie family, friends or partner etc.

That way you still would receive a gift you really want but be surprised as to what item you're getting!

If someone buys an item in your wish list, it could appear as 'out of stock' so that yourself or other people don't buy multiples of the same item.

You also won't know whether somebody bought it for you or if it actually is out of stock so you will be surprised when you receive it!

Perhaps your friends or family could also be made aware when your wishlist items go on sale?!