So this isn't really a question but more of an idea, but I don't know where to put it and don't think it deserves its own thread. So if anybody wants to move it make suggestions I won't be offended.
Anyways, what if at the end of the season we had a sort of one-off, non points race with decent amounts of cash on the line for sure, and let F1 drivers race each other in equal cars, like maybe GP2 cars. The location could change every year and it could be a chance to explore new venues as well as let the F1 drivers show who's really quicker in equal machinery.