Probably not; I don't personally think the main mechanic is interesting enough that I'd be able to get a full game's worth of mileage out of it, and I have other projects I'd rather work on. That said, if you want something with a similar concept, you could try an older non-jam game of mine called Ups and Downs, which has a similar gravity-switching mechanic (Downcast's mechanic is somewhat inspired by it.)
Thank you for playing!