Wow, this is really cool! This idea has been done similarly in a lot of games, but not quite like this! The closest I can think of is ibb & obb, but this is fantastic too. It really makes you think about just where you're going and forces you to think about two gravitational perspectives at the same time.
One thing I'd say is that it starts out reeally hard sometimes, and that can be pretty frustrating for new players.
Great work!