I've always found the clue tokens to be a little bland. I'm thinking that it would be neat if when you find a clue you could be given a peice of information that would assist the investigator overcome particular obstacles (replacing the general application on clues currently in the game). Perhaps the player could draw a card from a clue deck. Instead of trading in a batch of clues to close gates the investigators would have to find the right clues.
For instance, when my investgator enters a location with a clue token I return the token to "the bank" and drae a clue card. This card may tell me fire vampires are vulnerable in the heart, giving me a +3 advantage against fire vampires. Or it may tell me that foot long idols made of black stone are connected to gates to R'lyeh, allowing me to should gates to R'lyeh. Or it might tell me of and anciet stone circle in the swamp, allowing me to close gates in the swamp. Clues could have other effects, like "telling" players where clues they are looking for are (aka they can search the clue deck the next time they pick up a clue) or where particularly valuable items are (allows them to take item from the store decks).
Anyways, has any thing like this already been made?