Thanks to Logos, I am able to dig through John Wesley’s surviving works — more than sermons, but his journals and letters. In going through early Wesley, we find him dead set against anything remotely resembling Catholicity. Later in life, we find a developing thought:
But what is the essential part of heaven? Undoubtedly it is to see God, to know God, to love God. We shall then know both His nature, and His works of creation and providence, and of redemption. Even in paradise, in the intermediate state between death and the resurrection, we shall learn more concerning these in an hour, than we could in an age, during our stay in the body. We cannot tell indeed how we shall then exist, or what kind of organs we shall have: The soul will not be encumbered with flesh and blood; but probably it will have some sort of ethereal vehicle, even before God clothes us “with our nobler house of empyrean light.”
I’ll keep digging… but I think it has something to do with listening to a Michael Linner of the Moravians.