And what kind of evidence would you accept as evidence for God, that couldn’t be dismissed by “OHHHH that’s just a God of the Gaps argument”……….
Well, first you need to define what you mean by the term 'God'.
Then, find something that would differ between a universe with a God and one without a God. It would be nice to have something that is not just circumstantial. What that might be depends on your definition.
For example, you might present a being that everyone can see that claims to have created the universe and can demonstrate the ability to create other universes.
In other words, it would have to be something where 'God of the Gaps' could not apply. It would have to be based on positive knowledge that is unambiguous and clearly linked to a being defined by your definition.