Do you miss something on BrainKing.com and would you like to see it here? Post your request into this board! If there is a more specific board for the request, (i.e. game rule changes etc) then it should be posted and discussed on that specific board.
Harassed: All images should be cached by the browser by default. It is obvious because when someone updates the icon, other users still see the old one (cached by the browser) until they clear the cache or force a full reload by ctrl-f5. Which is another issue and will be addressed separately.