treasure hunt - a shared universe idea

I have been noodling the idea of a group of explorers who are taking clues which lead to different parts of North America and a hidden puzzle piece that only when all are found and everyone cooperates will lead to the ultimate treasure.

What I'm hoping for is a group of authors, each one following one of the teams looking for the answers through them finding a puzzle piece, and then one large story that would be about all the teams working together to get the treasure.

Would you want to be involved?