These are wishful thinking and speculations. What counts is; bring the evidence or empirical-rational arguments, else no point speculating at all.
God created the Universe with Earth therein.
Therefore the God that is spoken of anywhere in the Universe must be the same God all its believers speak of. Thus a discussion of God within Earth is sufficient to understand the idea of God and to confirm God exists is so easy, just bring the direct evidence.
If you are referring to human-liked higher intelligence existing somewhere in the Universe. Human-liked is empirical and empirically possible, but we know the possibility of such aliens existing is negligible to likely Zero. Thus your proposition related to this has near-zero credibility at present.
Beside why must an all-powerful God hide itself that only 100x time more intelligent being can only know it? It is so simple, just bring the direct evidence.
I have proposed the basis for the emergence of the idea of God is due to psychological factors. It would more easier and viable to research from the psychological perspectives within human [readily available for research] rather than waiting for direct evidence of God and finding evidence of human-liked aliens some billion of light years away. This is crazy.
Besides the non-theistic spiritualities, e.g. from Eastern spiritualities had already embarked on non-theistic approaches to resolve the human issues theistic doctrines are trying to tackle.
In addition, in resolving the same inherent existential crisis, the theistic path is full of ‘potholes’ of negatives, terrible terrors, evil & violence arising from its evil laden elements in their holy texts.
OTOH, non-theistic Eastern spiritualities like Buddhism are fully pacifist without elements leading and inspiring believers to commit terrible evils and violence.
Philosophically and wisely, the rational approach to the existential crisis is more effective than to rely on an impossible-to-be-real-God with its negative & evil baggage.