Let us try out the idea that there is supposed to be at least one possible world where decisive evidence of God exists. Now, is this evidence that God exists in that specific world? God does not with any world make up a whole.
Now, there would have to be decisive evidence in at least one world, that God exists in all worlds, or else such evidence that God exists but not in any one world. But how does such evidence end up in any world? God does not break into pieces, one of which could be identifiably deposited in some world. Much less could the fullness of God dwell in bodily form (notwithstanding what the Bible says; at best a divine person can incarnate, but not the divine nature in itself). So how do we move from evidence in a world, to conclusions outside of all worlds, when our only access to transworld logical space is in abstraction?
For God is not a general category, neither an instance of a different category; so whatever logic might say about necessary transpace existence, being abstract, might prove God to be possible, but it is also possible that we can't even decide whether God is possible.
I personally am suspicious even of the Catholic/hesychastic wish, because how could I in the flow of time, recognize that I saw through a glass darkly before, but now I see God face to face? How can the "qualia" of eternity change in experience? It would be more intelligible to say that there is beatific vision always, and what changes is our honesty with ourselves about it. But then you would want to prove that this vision exists. You need no extra proof of it for yourself; but for other people... And then either they always know or not, too, the moment of honesty is not yours and if they honestly don't know, that doesn't mean there's something else wrong with them.