Similar to Protestantism after the Reformation? Or was it too late at that point for these kinds of large scale religious changes in the West?
There is Mormonism, for example, which only came into existence in the 19th century, but it never attracted more than a relatively small minority in the US. Outside of the US it‘s practically unknown to most people. Is there a way to make it more successful?
Or some kind of effort to turn Deism, or some other form of ‚enlightened‘ Christianity, into an actual denomination, if such a thing is even possible?
Could some kind of ‚prophet‘ still be taken seriously post 1700, enough to spawn a whole new branch of Christianity across the West? Similar to Joseph Smith, the founder of Mormonism, but on a larger scale?